# What is the formula for resistivity?

What is the formula for resistivity?

done_all

Resistivity is represented by ρ (rho). The unit of resistivity is Ohm-meter (Ω⋅m) .

Resistivity (ρ ) = R.A/l

where, R is the electrical resistance

A is the area of cross section

l is the length.

resisitivity is represented by ,mho not
rho.

Resitivity is the property of a material. It is given in ρ .

R=ρ L/A is the formula.
where , Resitance is directly proportional to Length & Inversely proportional to Area of cross-section of the given material.
The resistivity is also known as the specific resistance of the material.
It is the resistance of a material per unit length and per unit cross-section of that material.
It is the resistance offered by a conductor to the flow of current is called specific resistance or resistivity.

## Related questions

Description : What factors affect resistivity?

Answer : 1)type of material 2)temperature 3)length and area of cross section of conductor

Description : What is the reciprocal of resistivity?

Description : Define resistivity. State its unit.

Answer : Resistivity can be defined as the resistance of a conducting material per unit length with unit area of cross section. Its unit is ohm/meter

Description : Problems on resistance and resistivity

Answer : Problem on resistance and resistivity 1 : https://youtu.be/OqavD7OlZUs Problem on resistance and resistivity 2 : https://youtu.be/0eo8VO8cpwk Problem on resistance and resistivity 3 : https:// ... https://youtu.be/3neLRCTz0RQ Problem on resistance and resistivity 13 : https://youtu.be/vBCkvPOiztY

Description : Problem on resistance and resistivity 13

Answer : Problem on resistance and resistivity 13

Description : Problem on resistance and resistivity 12

Answer : Problem on resistance and resistivity 12

Description : Problem on resistance and resistivity 11

Answer : Problem on resistance and resistivity 11

Description : Problem on resistance and resistivity 10

Answer : Problem on resistance and resistivity 10

Description : Problem on resistance and resistivity 9

Answer : Problem on resistance and resistivity 9

Description : Problem on resistance and resistivity 8

Answer : Problem on resistance and resistivity 8

Description : Problem on resistance and resistivity 7

Answer : Problem on resistance and resistivity 7

Description : Problem on resistance and resistivity 6

Answer : Problem on resistance and resistivity 6

Description : Problem on resistance and resistivity 5

Answer : Problem on resistance and resistivity 5

Description : Problem on resistance and resistivity 4

Answer : Problem on resistance and resistivity 4

Description : Problem on resistance and resistivity 3

Answer : Problem on resistance and resistivity 3

Description : Problem on resistance and resistivity 2

Answer : Problem on resistance and resistivity 2

Description : Problem on resistance and resistivity 1

Answer : Problem on resistance and resistivity 1

Description : Which material has low resistivity?

Answer : Silver have lowest resistivity then copper then aluminium tungsten then iron...

Description : resistivity of wire depend on?

Answer : Resitivity of wire depends on material, electrical resistance of that material, area of cross section and length.

Description :

Answer : R=V÷I R= Resistance value(ohm) V=Potential different between two point(volt) I=Current(Amp)

Description : Acceleration formula

Description : Wye and delta conversion formula

Answer : Wye and delta conversion formula

Description : Voltage formula

Description : Self inductance formula

Description : RMS value formula

Description : Permeability formula

Description : Ohm's law formula

Description : Magnetomotive force formula

Description : Flux density formula

Description :  Field intensity formula

Description : Energy stored in electrostatic field of capacitance formula

Answer : Energy stored in electrostatic field of capacitance formula

Description : Electric power formula

Description : Current formula

Description : Conductivity formula

Description : Conductance formula

Description : Capacitive reactance

Description : Capacitive current

Description : Define magnetic flux density and state its formula.

Answer : The magnetic flux per unit area is called as magnetic flux density. Magnetic flux density is denoted by B. The formula for magnetic flux density is Weber per metre square or Tesla. Mathematically ... the unit of magnetic flux density is Weber per metre square which is also called as Tesla.

Description :

Time constant for RC circuit formula

τ = RC

Where, τ = time constant

Answer : Time constant for RC circuit formula τ = RC Where, τ = time constant

Description :

What is the formula of torque?

Description : What is Mason's gain formula?

Description : Resistance formula

Answer : The formula for resistance is, Where, R = resistance in Ohms ρ = resistivity in ohm - metre l = length A = cross sectional area

Description : The following formula is correct:  (A) Load factor=Average load for a period/ Peak load for the same period  (B) Load factor=Average load for a period x Peak load for the same period  (C) Load factor=Average load for a period + Peak load for the same period  (D) All of the above

Description : What is the correct sequence of the following materials in ascending order of their resistivity ?  1. Iron  2. Silver  3. Constantan  4. Mica  5. Aluminium  Select the correct answer using the codes given below :  (a) 2, 5, 1, 3 and 4  (b) 4, 5, 3, 1 and 2  (c) 2, 3, 1, 5 and 4  (d) 4, 5, 1, 3 and 2

Answer : What is the correct sequence of the following materials in ascending order of their resistivity ?  1. Iron  2. Silver  3. Constantan  4. Mica  5. Aluminium  Select the correct answer using the codes given below :  ... 1 and 2  (c) 2, 3, 1, 5 and 4  (d) 4, 5, 1, 3 and 2

Description :

Description : What is formula for power?

Answer : The capacity to do work is termed as Energy. The Energy expended to do work in unit time istermed as Power. It is represented as P

Description : What is the formula for Watts Law?

Answer : This is the formula for power Watts = Volts2 / Ohms..

Description : Define – resistance and resistivity. State relationship between them. Give one material having high resistivity.

Answer : Ans: Resistance and Resistivity: Resistance: It is the opposition offered by the conductor to the flow of current. Resistivity: It is property of the substance by virtue of which it opposes to ... high resistivity: Mica, Nichrom, Rubber, Glass, Plastic Porcelain, Dry wood, Insulating material etc.

Description : Materials, whose resistivity at very low temperatures plunges from a finite value to zero and remains there upon further cooling, are known as

Answer : Materials, whose resistivity at very low temperatures plunges from a finite value to zero and remains there upon further cooling, are known as Superconductors

Description : The resistivity of a semiconductor material increases as : (A) The temperature increases (B) The temperature decreases (C) The temperature remains constant (D) None of the above

← Prev Question Next Question →