Discuss
menu
search
person
Login
Register
search
edit
Ask a Question
Discuss
All Activity
Q&A
Questions
Hot!
Unanswered
Tags
Ask a Question
is Ohms law applicable to vacuum tubes?
Speak Question
asked
Aug 16, 2017
by
anonymous
is Ohms law applicable to vacuum tubes?
thumb_up_alt
0
like
thumb_down_alt
0
dislike
160
views
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1
Answer
Speak Answer
answered
Oct 7, 2017
by
anonymous
Ohm's law is not applicable to vacuum tubes.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
Please
log in
or
register
to add a comment.
← Prev Question
Next Question →
Related questions
asked
Mar 31, 2018
by
anonymous
Ohm’s law is applicable to :
Ohm’s law is applicable to : (A) Semi-conductors (B) Vacuum tubes (C) Electrolytes (D) Semiconductors and Vacuum tubes
thumb_up_alt
0
like
thumb_down_alt
0
dislike
106
views
0
answers
asked
Mar 31, 2018
by
anonymous
Ohm's law is not applicable to
Last answer:
Ohm's law is not applicable to semi-conductors.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
55
views
1
answer
asked
Oct 2, 2017
by
anonymous
why ohm's law is not applicable for ac circuit?
why ohm's law is not applicable for ac circuit?
Last answer:
We can use Ohm's law for AC circuit if circuit consists of linear components and devices.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
429
views
3
answers
asked
Apr 25, 2018
by
anonymous
Kirchhoff's current law is applicable to 1. Closed loops in a circuit 2. Junction in a circuit 3. Magnetic circuits ...
Kirchhoff's current law is applicable to 1. Closed loops in a circuit 2. Junction in a circuit 3. Magnetic circuits Which of the above is/are correct ? (a) 1 only (b) 2 only (c) 3 only (d) 1, 2 and 3
Last answer:
Kirchhoff's current law is applicable to 1. Closed loops in a circuit 2. Junction in a circuit 3. Magnetic circuits Which of the above is/are correct ? (a) 1 only (b) 2 only (c) 3 only (d) 1, 2 and 3
thumb_up_alt
0
like
thumb_down_alt
0
dislike
81
views
1
answer
asked
Oct 2, 2017
by
anonymous
ohm law is applicable to ac or dc?
Last answer:
both ac as well as dc
thumb_up_alt
0
like
thumb_down_alt
0
dislike
79
views
1
answer
asked
Aug 6, 2020
by
anonymous
Explain Dalton's law of partial pressure. How it is applicable to condenser?
Explain Dalton's law of partial pressure. How it is applicable to condenser?
Last answer:
It states that' The pressure exerted by mixture of air and steam is equal to sum of partial pressures, which each constitute would exert, if it occupies the same volume . In condenser total ... mixture of air and steam Pa = Partial pressure of air Ps = Partial pressure of steam
thumb_up_alt
0
like
thumb_down_alt
0
dislike
118
views
1
answer
asked
Mar 25, 2018
by
anonymous
Kirchhoff s law is not applicable to circuits with?
Kirchhoff s law is not applicable to circuits with?
Last answer:
Kirchhoff's law is not applicable to circuits with distributed parameters.
kirchhoff
law
thumb_up_alt
0
like
thumb_down_alt
0
dislike
56
views
1
answer
asked
Mar 25, 2018
by
anonymous
Kirchhoff s law is applicable to?
Kirchhoff s law is applicable to?
Last answer:
Kirchhoff s law is applicable to both a.c. as well d.c. circuits.
kirchhoff
law
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2.5k
views
1
answer
asked
Mar 25, 2018
by
anonymous
Kirchhoffs current law is applicable to only?
Kirchhoffs current law is applicable to only?
Last answer:
Kirchhoffs current law is applicable to only junction in a network.
kirchhoff
current
law
thumb_up_alt
0
like
thumb_down_alt
0
dislike
86
views
1
answer
asked
Apr 9, 2018
by
anonymous
According to Ohm's law:
According to Ohm's law: (1) The voltage is constant to current (2) The voltage is proportional to current (3) Voltage is inversely proportional to current (4) The voltage is proportional to resistance
Last answer:
At constant temperature current passing through a conductor is directly proporstional to voltage across a conductor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
81
views
3
answers
asked
Oct 2, 2017
by
anonymous
does ohm's law apply to ac circuits?
does ohm's law apply to ac circuits?
Last answer:
Yes it does, but as it is supplied with ac we will have to take impedance in account.
thumb_up_alt
3
like
thumb_down_alt
0
dislike
341
views
4
answers
asked
3 days
ago
by
anonymous
The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as: (1) Avogadro’s law (2) Rault’s law (3) Ohms law (4) Faraday’s law
The magnitude of current flowing between two end points of a conductor is proportional to the potential difference between them and is called as: (1) Avogadro’s law (2) Rault’s law (3) Ohms law (4) Faraday’s law
Last answer:
Ohms law
physics
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2
views
1
answer
asked
Dec 5, 2017
by
bhanuprakash
according to ohms law voltage directly proportional to current but it is reverse in transformer why?
About trnsformer
Last answer:
Acc to Ohms law V=IR but it is only applicable when our resistance R is constant, as in case of transformer we take impedence which is equivalent to resistance is not constant it varies with system parameters that why Ohms law not applicable in case of transformer
voltage
current
power
thumb_up_alt
0
like
thumb_down_alt
0
dislike
99
views
1
answer
asked
Apr 10, 2018
by
anonymous
The Kirchoff's law for a.c. is applicable upon consideration of -
The Kirchoff's law for a.c. is applicable upon consideration of - a) Phasor sum b) Algebraic sum c) Progression sum d) Linear sum
Last answer:
The Kirchoff's law for a.c. is applicable upon consideration of - Phasor sum
thumb_up_alt
0
like
thumb_down_alt
0
dislike
41
views
1
answer
asked
Aug 17, 2019
by
anonymous
State Ohm’s law for electric circuit.
State Ohm’s law for electric circuit.
Last answer:
Ohms law -States that the current flows in a circuit is directly proportional to the applied voltage (V) and inversely the proportional resistance provided with the temperature main constant
electric
circuit
thumb_up_alt
0
like
thumb_down_alt
0
dislike
54
views
2
answers
asked
Jul 4, 2019
by
anonymous
Does the linear circuit obey Ohm's law?
Does the linear circuit obey Ohm's law?
Last answer:
Yes linear circuit obey Ohm's law and nonlinear circuit not satisfied Ohm's law.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
46
views
1
answer
asked
Jun 11, 2019
by
anonymous
Ohm's law formula
Ohm's law formula
Last answer:
Ohm's law formula
ohms
law
formula
thumb_up_alt
0
like
thumb_down_alt
0
dislike
75
views
1
answer
asked
Sep 2, 2018
by
anonymous
State and explain Ohm’s law.
State and explain Ohm’s law.
Last answer:
Ans: Ohm's law: As long as physical conditions (such as dimensions, pressure and temperature) are constant, the potential difference or voltage applied across the conductor is directly proportional to ... V/R where, R = constant of proportionality, called as the resistance of the conductor.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
35
views
1
answer
asked
3 days
ago
by
anonymous
Ohm’s law is valid in case of (1) semiconductor (2) conductor (3) superconductor (4) insulator
Ohm’s law is valid in case of (1) semiconductor (2) conductor (3) superconductor (4) insulator
Last answer:
conductor
physics
thumb_up_alt
0
like
thumb_down_alt
0
dislike
1
view
1
answer
asked
Mar 28, 2018
by
anonymous
If the resistance of a conductor does not vary in accordance with Ohm's law it is known as
Last answer:
If the resistance of a conductor does not vary in accordance with Ohm's law it is known as non-linear conductor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
64
views
1
answer
asked
Mar 25, 2018
by
anonymous
The condition for the validity under Ohm's law is that?
The condition for the validity under Ohm's law is that?
Last answer:
The condition for the validity under Ohm's law is that resistance must be uniform.
condition
ohms
law
thumb_up_alt
0
like
thumb_down_alt
0
dislike
96
views
1
answer
asked
Jun 6, 2020
by
anonymous
Ohm's Law
Ohm's Law Fundamentals of Electrical Engineering
thumb_up_alt
0
like
thumb_down_alt
0
dislike
13
views
0
answers
asked
Apr 9, 2020
by
anonymous
Ohm's law example
Ohm's law example
Last answer:
Ohm's law example
ohms
law
example
thumb_up_alt
0
like
thumb_down_alt
0
dislike
73
views
2
answers
asked
Aug 10, 2018
by
anonymous
State and explain Ohm's law for magnetic circuit.
State and explain Ohm's law for magnetic circuit.
Last answer:
Ohm's law for electric circuit is V = I R where V is voltage, I is current, R is Resistance. Ohm's law for magnetic circuit is MMF = Φ X S where MMF is magnetomotive force (NI) ... . Resistance is the opposition to the flow of current while reluctance is the opposition to the flow of magnetic flux.
ohms
law
magnetic
circuit
thumb_up_alt
0
like
thumb_down_alt
0
dislike
471
views
1
answer
asked
Apr 25, 2020
by
vaibhavgoud
According to the Theory of Relativity, the speed of light in a vacuum is ______ for all observers?
thumb_up_alt
0
like
thumb_down_alt
0
dislike
94
views
0
answers
asked
Apr 25, 2018
by
anonymous
In general AC distribution systems, arc interruption in vacuum circuit breakers are designed to function in a...
In general AC distribution systems, arc interruption in vacuum circuit breakers are designed to function in a time period of (a) One cycle (b) Two to three cycles (c) Within ten cycles (d) None of the above
Last answer:
In general AC distribution systems, arc interruption in vacuum circuit breakers are designed to function in a time period of One cycle
thumb_up_alt
0
like
thumb_down_alt
0
dislike
118
views
1
answer
asked
Jan 10
by
anonymous
Three tubes A, B and C can fill a tank in 12hours. After working at it together for 4 hours, C is closed and A and B can fill the remaining part in 12 hours. The number of hours taken by C alone to fill the tank is A) 32hrs B) 30hrs C) 38hrs D) 36hrs
Three tubes A, B and C can fill a tank in 12hours. After working at it together for 4 hours, C is closed and A and B can fill the remaining part in 12 hours. The number of hours taken by C alone to fill the tank is A) 32hrs B) 30hrs C) 38hrs D) 36hrs
Last answer:
D A+B+C in 1h = 1/12 A+B+C in 4h = 4/12 = 1/3 Remaining = 1-1/3 = 2/3 A+B in 12hrs = 2/3 A+B in 1hr = 2/36=1/18 C alone to fill the tank= 1/12– 1/18 = 3-2/36= 1/36=36hrs
pipes-and-cistern
thumb_up_alt
0
like
thumb_down_alt
0
dislike
8
views
1
answer
asked
Jan 10
by
anonymous
A dumper is filled in 15hrs by 3 tubes P,Q,and R. the tube R is thrice as fast as Q and Q is thrice as fast as P. How much time will tube Q alone take to fill the tank? A) 195hrs B) 190hrs C) 185hrs D) 180hrs
A dumper is filled in 15hrs by 3 tubes P,Q,and R. the tube R is thrice as fast as Q and Q is thrice as fast as P. How much time will tube Q alone take to fill the tank? A) 195hrs B) 190hrs C) 185hrs D) 180hrs
Last answer:
A Suppose tube P alone takes x hrs to fill the tank Then tubes Q and R will take x/3 and x/9 hrs respectively to fill the dumper. Therefore 1/x + 3/x+ 9/x = 1/15 13x = 1/15 X = 195 hrs
pipes-and-cistern
thumb_up_alt
0
like
thumb_down_alt
0
dislike
7
views
1
answer
asked
Jan 10
by
anonymous
A tube can fill a cistern in 18hrs.After half the cistern is filled, three more similar tubes are opened. What is the total time taken to fill the cistern completely ? A) 9hrs 52min B) 10hrs 15 min C) 9hrs 45 min D) 10hrs 30min
A tube can fill a cistern in 18hrs.After half the cistern is filled, three more similar tubes are opened. What is the total time taken to fill the cistern completely ? A) 9hrs 52min B) 10hrs 15 min C) 9hrs 45 min D) 10hrs 30min
Last answer:
D Time taken to fill the half cistern = 18/2 = 9 hrs Remaining part = 1/2 Time taken to fill the remaining part = [1/(4×1/12)] ×(1/2) = 3/2hrs 3/2 hrs = 90 min = 1hr 30mints Total time = 9hrs+90 min = 10hrs 30mins
pipes-and-cistern
thumb_up_alt
0
like
thumb_down_alt
0
dislike
3
views
1
answer
asked
Jan 10
by
anonymous
One tube can fill a tank five times as fast as another tube. If together the two tubes can fill tank in 42 min, then the slower tube alone will be able to fill the tank in? A) 252 min B) 208 min C) 244 min D) 192 min
One tube can fill a tank five times as fast as another tube. If together the two tubes can fill tank in 42 min, then the slower tube alone will be able to fill the tank in? A) 252 min B) 208 min C) 244 min D) 192 min
Last answer:
A Let the slower tube alone fill the tank in x min. Then, faster tube will fill it in x/5 min. 1/x + 5/x = 1/42 6/x = 1/42 => x = 252min.
pipes-and-cistern
thumb_up_alt
0
like
thumb_down_alt
0
dislike
4
views
1
answer
asked
Apr 14, 2018
by
anonymous
A 6V zener diode is used to provide voltage regulation with a series resistance of 100 Ohms and supply..
A 6V zener diode is used to provide voltage regulation with a series resistance of 100 Ohms and supply voltage is 12V. When under no load the power dissipated in the zener diode is (a) 60mW (b) 36mW (c) 360mW (d) 3600mW
thumb_up_alt
0
like
thumb_down_alt
0
dislike
54
views
0
answers
asked
Mar 31, 2018
by
anonymous
Resistance of a wire is r ohms. The wire is stretched to double its length, then its resistance in ohms is
Last answer:
Resistance of a wire is r ohms. The wire is stretched to double its length, then its resistance in ohms is 4 r.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
104
views
1
answer
asked
May 29, 2018
by
anonymous
Superposition theorem is not applicable to network containing:
Superposition theorem is not applicable to network containing: (1) Non linear element (2) Dependent voltage source (3) Dependent current source (4) Transformer.
Last answer:
A
thumb_up_alt
0
like
thumb_down_alt
0
dislike
1.5k
views
2
answers
asked
May 14, 2018
by
anonymous
Fleming’s left hand rule is applicable to
Fleming’s left hand rule is applicable to
Last answer:
Fleming’s left hand rule is applicable to dc motor
thumb_up_alt
0
like
thumb_down_alt
0
dislike
54
views
1
answer
asked
Mar 25, 2018
by
anonymous
The superposition theorem is applicable to?
The superposition theorem is applicable to?
Last answer:
The superposition theorem is applicable to linear responses only.
superposition
theorem
thumb_up_alt
0
like
thumb_down_alt
0
dislike
96
views
1
answer
asked
5 days
ago
by
anonymous
The velocity of heat radiation in vacuum is (1) Equal to that of light (2) Less than that of light (3) Greater than that of light (4) Equal to that of sound
The velocity of heat radiation in vacuum is (1) Equal to that of light (2) Less than that of light (3) Greater than that of light (4) Equal to that of sound
Last answer:
Equal to that of light
physics
thumb_up_alt
0
like
thumb_down_alt
0
dislike
6
views
1
answer
asked
Aug 24, 2019
by
anonymous
A galvanometer of resistance 40 ohms requires a current of 10mA to give a full-scale deflection.
A galvanometer of resistance 40 ohms requires a current of 10mA to give a full-scale deflection. A shunt is put in position to convert it to a meter reading up to 1.0A full-scale deflection. A resistance bobbin, intended to convert the galvanometer to one reading up to 1.0V full-scale ... inadvertently left in position. By considering the potential difference across the bobbin and the meter, calculate the voltage which would produce full-scale deflection of the meter.
galvanometer
thumb_up_alt
0
like
thumb_down_alt
0
dislike
114
views
0
answers
asked
Apr 9, 2018
by
anonymous
Which ofthe following theorem is applicable for both linear and non-linear circuits?
Which ofthe following theorem is applicable for both linear and non-linear circuits? A) Superposition theorem B) Thevenin’s theorem C) Norton’s theorem D) None of these
thumb_up_alt
0
like
thumb_down_alt
0
dislike
906
views
0
answers
asked
Jun 18, 2018
by
anonymous
What is the value of susceptibility in case of vacuum?
What is the value of susceptibility in case of vacuum? A) 1 B) 0.5 C) ∞ D) 0
Last answer:
What is the value of susceptibility in case of vacuum? A) 1 B) 0.5 C) ∞ D) 0
susceptibility
vacuum
thumb_up_alt
0
like
thumb_down_alt
0
dislike
187
views
1
answer
asked
Mar 25, 2018
by
anonymous
Relative permeability of vacuum is?
Relative permeability of vacuum is?
Last answer:
Relative permeability of vacuum is 1.
relative
permeability
vacuum
thumb_up_alt
0
like
thumb_down_alt
0
dislike
58
views
1
answer
asked
Aug 6, 2017
by
anonymous
what is vacuum tube?
what is vacuum tube?
Last answer:
A vacuum tube is a tube with no air particles.
vacuum
tube
thumb_up_alt
0
like
thumb_down_alt
0
dislike
64
views
1
answer
asked
3 hours
ago
by
anonymous
Accupuncture is (1) a disease of heart (2) servicing of tubes and tyres (3) a treatment method with needles (4) a crop culture
Accupuncture is (1) a disease of heart (2) servicing of tubes and tyres (3) a treatment method with needles (4) a crop culture
Last answer:
a treatment method with needles
biology
thumb_up_alt
0
like
thumb_down_alt
0
dislike
4
views
1
answer
asked
3 days
ago
by
anonymous
What is the most commonly used substance in fluorescent tubes? (1) Sodium oxide and argon (2) Sodium vapour and neon (3) Mercury vapour and argon (4) Mercury oxide and neon
What is the most commonly used substance in fluorescent tubes? (1) Sodium oxide and argon (2) Sodium vapour and neon (3) Mercury vapour and argon (4) Mercury oxide and neon
Last answer:
Mercury vapour and argon
chemistry
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2
views
1
answer
asked
Jan 10
by
anonymous
Two tube A and B can fill a cistern in 48 mins and 64 mins. If both the tubes are opened simultaneously, after how much time B should be closed so that the cistern is full in 36 minutes? A) 20 mins B) 16mins C) 22mins D) 14mins
Two tube A and B can fill a cistern in 48 mins and 64 mins. If both the tubes are opened simultaneously, after how much time B should be closed so that the cistern is full in 36 minutes? A) 20 mins B) 16mins C) 22mins D) 14mins
Last answer:
B Let B be closed after ‘x’ mins. Then part filled by (A+B) in x mins + part filled by A in (36 – x) mins = 1 Therefore x(1/48 + 1/64) + (36 – x)* 1/48 = 1 7x/192 + 36 – x/48 = 1 7x + 4(36-x)/192 = 1 7x+144 – 4x = 192 3x = 48 =>x = 16 Here B must be closed after 16 mins.
pipes-and-cistern
thumb_up_alt
0
like
thumb_down_alt
0
dislike
5
views
1
answer
asked
May 13, 2018
by
anonymous
Which law is synonymous to the occurrence of diamagnetism?
Which law is synonymous to the occurrence of diamagnetism? (a) Ampere’s law (b) Maxwell’s law (c) Coulomb’s law (d) Lenz’s law
Last answer:
Which law is synonymous to the occurrence of diamagnetism? (a) Ampere’s law (b) Maxwell’s law (c) Coulomb’s law (d) Lenz’s law
thumb_up_alt
0
like
thumb_down_alt
0
dislike
263
views
1
answer
asked
2 days
ago
by
anonymous
The coloured discharge tubes for advertisement mainly contain (1) Xenon (2) Argon (3) Helium (4) Neon
The coloured discharge tubes for advertisement mainly contain (1) Xenon (2) Argon (3) Helium (4) Neon
Last answer:
Neon
chemistry
thumb_up_alt
0
like
thumb_down_alt
0
dislike
2
views
1
answer
asked
May 15, 2018
by
anonymous
How much voltage is needed to produce 2.5 A of current through a 200 ohms resistor?
How much voltage is needed to produce 2.5 A of current through a 200 ohms resistor? A.50 V B.500 V C.80 V D.8 V
Last answer:
500V
thumb_up_alt
0
like
thumb_down_alt
0
dislike
139
views
2
answers
asked
May 15, 2018
by
anonymous
The turns ratio required to match an 80 ohms source to a 320 ohms load is?
The turns ratio required to match an 80 ohms source to a 320 ohms load is? A.80 B.20 C.4 D.2
Last answer:
c
thumb_up_alt
0
like
thumb_down_alt
0
dislike
1.4k
views
2
answers
asked
Mar 25, 2018
by
anonymous
If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be?
If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be?
Last answer:
If the energy is supplied from a source, whose resistance is 1 ohm, to a load of 100 ohms the source will be a voltage source.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
672
views
1
answer
asked
Sep 2, 2018
by
anonymous
Define any three laws related to electromagnetic induction. Write use of each law.
Define any three laws related to electromagnetic induction. Write use of each law.
Last answer:
Ans: Faraday's laws of electromagnetic induction: First law: Whenever a conductor cuts the magnetic flux, an emf is induced in it. OR Whenever a changing magnetic flux links with the ... used for finding the direction of force acting on current carrying conductor when placed in magnetic field.
thumb_up_alt
0
like
thumb_down_alt
0
dislike
51
views
1
answer
...