**Description :** When an additional resistor is connected across an existing parallel circuit, the total resistance: A. remains the same B. decreases by the value of the added resistor C. increases by the value of the added resistor D. decreases

**Last Answer :** When an additional resistor is connected across an existing parallel circuit, the total resistance: decreases

**Description :** What is the total resistance of three 15-ohm resistors connected in parallel?

**Last Answer :** ANSWER: 5 OHMS

**Last Answer :** If two resistances of 10 Ω and 10 Ω are connected in parallel the equivalent resistance is 5 Ω.

**Description :** What is the total resistance if 5 resistors of 20 Ω each are connected in series? A) 100 Ω B) 4 Ω C) 20 Ω D) None of these

**Last Answer :** What is the total resistance if 5 resistors of 20 Ω each are connected in series? A) 100 Ω B) 4 Ω C) 20 Ω D) None of these

**Description :** If electric resistance is to be decreased, then the number of resistances should be connected in _______ (1) Series (2) Parallel (3) Mixed arrangement (4) None of these

**Last Answer :** Parallel

**Description :** A 30ohm resistance is connected in parallel with a resistor whose ohmic value is unknown.if thetotal current taken us 10.5s ,when the circuit voltage is210v,calculate the resistance

**Last Answer :** If two parallel-connected resistors dissipate 6 watts and 10 watts of power, then 16 watts is the total power loss.

**Description :** what is equivalent resistance when four 4 Ohm resistors are connected in i) series ii) parallel

**Last Answer :** equivalent resistance

**Description :** When two 100 kΩ resistors are connected in parallel, net resistance is

**Last Answer :** When two 100 kΩ resistors are connected in parallel, net resistance is 50 kΩ

**Description :** A coil of inductance 240 mH and resistance 75 Ohm is connected in parallel with a capacitor across a 30 V, variable frequency supply. The current drawn by the circuit is found to be minimum when the supply frequency is 1 kHz. The ... (A) 40, 400 Hz (B) 10, 100 Hz (C) 20, 50 Hz (D) 50, 20 Hz

**Last Answer :** A coil of inductance 240 mH and resistance 75 Ohm is connected in parallel with a capacitor across a 30 V, variable frequency supply. The current drawn by the circuit is found to be minimum ... supply frequency is 1 kHz. The approximate values of Q-factor and bandwidth are, respectively 20, 50 Hz

**Description :** A parallel combination of capacitance C and resistance R is connected in series with inductance L and small resistance r. Under what condition will the circuit be non-reactive? (A) C=LR (B) C=LR2 (C) C=L/R2 (D) C=L/R

**Description :** What is the equivalent resistance of a network having 5 resistors of each 10ohm connected in parallel? (A) 10 Ohms (B) 50 Ohms (C) 500 Ohms (D) 2 Ohms

**Last Answer :** D) 2 ohms Solution: 1/Rt = (1/R)(n) 1/Rt = (1/10) (5) 1/Rt = 5/10 Rt = 2 ohms

**Description :** When ‘n’ resistances each of value ‘r’ are connected in parallel, then the resultant resistance is ‘x’. When these ‘n’ resistances are connected in series, total resistance is (A) n2X (B) X/n (C) n2/X (D) nX2

**Description :** Why will an ammeter be damaged if connected in parallel with the circuit to be measured?

**Last Answer :** Since the ammeter has a small resistance compared to the load, it will have very high current if it is connected in parallel. This high current will damage the meter.

**Description :** why the electrical appliances are connected in parallel ?

**Last Answer :** If the appliances connected in series if one of the appliances fails to work other appliances also doesn't work because the current doesn't flow in the appliances.so ,we connect appliances in parallel that if any one of the appliances fails to work it doesn't effect other appliances .

**Description :** What is the effect on total resistance and total current in a circuit if a short occurs in (a) a parallel branch, and (b) in a series portion?

**Last Answer :** (a) Total resistance decreases, total current increases (b) Total resistance decreases, total current increases

**Description :** What is the effect on total resistance and total current in a circuit if an open occurs in (a) a parallel branch, and (b) in a series portion?

**Last Answer :** (a) Total resistance increases, total current decreases (b) Total resistance becomes infinite, total current is equal to zero

**Last Answer :** It increases.

**Description :** When two batteries are connected in parallel, it should be ensured that A. They have same emf B. They have same make C. They have same ampere hour capacity D. They have identical internal resistance

**Last Answer :** A. They have same emf

A shunt-type voltage regulator is connected in serial/parallel (which one) with the load resistance.

**Description :** A shunt-type voltage regulator is connected in serial/parallel (which one) with the load resistance.

**Last Answer :** In parallel.

**Description :** A shunt type voltage regulator is connected in series/parallel with the load resistance.

**Last Answer :** Parallel

**Description :** Three resistors connected in parallel have values of 12 kΩ, 20kΩ, and 30kΩ. What is the equivalent resistance? A37. 6kΩ Q38. Two resistors connected in parallel have values of 10 kΩ and 30kΩ. What is eht equivalent resistance?

**Last Answer :** 7.5kΩ

**Description :** Four equal resistors are connected in parallel, each resistor has an ohmic value of 100 ohms, what is the equivalent resistance?

**Last Answer :** 25 ohms

**Description :** What structurally large, low-resistance conductor is connected in parallel with the meter movement to prevent damage?

**Last Answer :** Shunt.

**Description :** When 2,4 and 6 ohms resistor are connected in parallel their resultant equivalent resistance will be A. 12ohm b. 11/12ohm C. 12/11ohm d. None

**Last Answer :** C. 12/11ohm

**Description :** N resistors of each of resistance R when connected in series offer an equivalent resistance of 50 ohm and when reconnected in parallel the effective resistance is 2 ohm the value of R is

**Last Answer :** 25 ohms

**Description :** A five ohm and a ten ohm resistor are connected in parallel, what single resistance is "equivalent" to this combination?

**Last Answer :** ANSWER: 3 AND 1/3 OHM

**Description :** A wire of resistance R is cut into ‘n’ equal parts. These parts are then connected in parallel. The equivalent resistance of the combination will be

**Last Answer :** R/n2

**Description :** A resistor of value R/2 is connected in parallel with a resistor of value R/3. The voltage drop across the parallel combination is V. The total current supplied by the voltage source is: w) 2 V/R (read: 2 V over R) x) 3 V/R (read: 3 V over R) y) 4 V/R (read: 4 V over R) z) 5 V/R (read: 5 V over R)

**Last Answer :** ANSWER: Z -- 5 V/R

**Description :** Two identical resistors are connected in parallel and consume 200 watts together. A third identical resistor is added in parallel. The total power consumed is: w) 100 watts x) 200 watts y) 300 watts z) 400 watts

**Last Answer :** ANSWER: Y -- 300 WATTS

**Description :** How will the total capacitance change, when two capacitors are connected in parallel?

**Last Answer :** The capacitance will increase if connected in parallel because it will be like you have increase surface area of a plate by connecting it to another.

**Description :** Three lamps are connected in parallel across a 120 Volt source. If one lamp burns out, the remaining two will be: A. Glow dimmer B. Glow brighter C. Not light D. Glow with the same brightness as before

**Last Answer :** Glow with the same brightness as before

**Description :** what will be the capacitance if three capacitors connected in parallel each having value of 0.5 micro Farad ?

**Last Answer :** the total capacitace when connected in parallel Tc=total capacitor c1=c2=c3=0.5uf Tc=c1+c2+c3 Tc=1.5uf

**Description :** For a balanced three phase star connected load for which line voltage is 230V and per phase resistance and reactance is 6 Ohm and 8 Ohm respectively. Calculate: 1) phase voltage 2) line current 3) power factor 4) total power absorbed

**Description :** The total power in both series and parallel circuits is computed with the formula: PT = P1 + P2 + P3 +...Pn. Why can this formula be used for both series and parallel circuits?

**Last Answer :** In both cases all the power used in the circuit must come from the source.

**Description :** Consider the following statements : If a high Q parallel resonant circuit is loaded with a resistance 1. The circuit impedance reduces. 2. The resonant frequency remains the same. 3. The bandwidth reduces. Which of the above statements is/are correct ?

**Last Answer :** Consider the following statements : If a high Q parallel resonant circuit is loaded with a resistance 1. The circuit impedance reduces. 2. The resonant frequency remains the same. 3. The bandwidth reduces. Which of the above statements is/are correct ? 3 only

**Description :** Two resistance 100Ω ± 5Ω ± 15Ω are connected in series. If the errors are specified as standard deviations, the resultant error will be

**Last Answer :** Two resistance 100Ω ± 5Ω ± 15Ω are connected in series. If the errors are specified as standard deviations, the resultant error will be ± 15.8Ω

**Description :** Three equal resistors connected in series with a source of e m f together dissipate 10 W of power each. What will be the power dissipated if the same resistors are connected in parallel across the same source of e m f? a. 40 W b. 90W c. 100W d. 120W

**Last Answer :** b. 90W

**Description :** A 20 ohm resistor and a 60 ohm resistor are connected in parallel to a voltage source. If the current in the 60 ohm resistor is one ampere, the current in the 20 ohm resistor will be: w) 1/3 ampere x) 2/3 ampere y) 1 ampere z) 3 amperes

**Last Answer :** ANSWER: Z -- 3 AMPERES

**Description :** If a three farad capacitor and a six farad capacitor are connected in parallel, what is their equivalent capacitance?

**Last Answer :** ANSWER: 9 FARADS

**Description :** If two 3-phase transformers with unequal voltage ratios are connected in parallel, the result is (A) circulating current on no-load (B) no circulating current on no-load (C) dead short-circuit (D) equal no-load secondary emfs

**Description :** With three resistances connected in parallel, if each dissipates 20 W the total power supplied by the voltage source equals?

**Last Answer :** Power is the only thing which is additive in both connection whether it is parallel or series connection so total power consumed will addition of all individual power =20+20+20 = 60 watt

What will happen if the transformers working in parallel are not connected with regard to polarity ?

**Last Answer :** Winding will be damaged

**Description :** According to Ohm’s law, what happens to circuit current if circuit resistance (a) increases, (b) decreases?

**Last Answer :** (a) Current decreases (b) Current increases

**Description :** Resistance of a material always decreases if?

**Last Answer :** Resistance of a material always decreases if number of free electrons available become more.

**Last Answer :** Req= (1/1200 +1/560 + 1/2.1)^-1 = 2.1 ohms RT= 2.1 + 7.8 = 9.9 ohms IT = V/R = 24/9.9 = 2.4 A Veq= R I = 2.1 2 ... 7.8 = 12.096 w = 44.928 w _________________________________________ By: Ellis-Junior Kamatjipose ellisjuniork90@gmail.com

**Description :** Three capacitors 15µf, 18µf and 12µf are connected in a circuit. Find equivalent capacitance when they are connected in – 1) Series 2) Parallel

**Last Answer :** Ans: Value of equivalent capacitance: Given: C1= 15μF, C2=18 µF, C3= 12µF i)For Series combination of capacitors: 1/Cs = (1/C1)+( 1/C2) +(1/C3) = (1/15)+( 1/18)+( 1/12) 1/Cs = 0.0666+0.0555+0. ... Cs = 4.868 µF ii) For parallel combination of capacitors: Cp = C1 + C2 + C3 = 15 +18+ 12 = 45 µF

**Description :** Two heater wires of equal length are connected first in series and then in parallel. The ratio of heat generated from series to parallel connection will be (a) 4 : 1 (b) 2 : 1 (c) 1 : 2 (d) 1 : 4