Question

What is the difference between resistance and resistivity. Explain

Answer 1

REAIATANCE OPPOSES THE FLOW OF CHARGE OR CURRENT AND IT IS DEPENDENT ON IT'S LENGTH THICKNESS

MEANWHILE RESISTIVITY OF SUBSTANCES DOES NOT DEPEND ON IT'S LENGTH OR THICKNESS

Answer 2

Hello friend..!!

Resistance :

• the opposition offered to the flow of current is called resistance.
R = V/I where R represents resistance, V represent potential difference and I represents current.

• the SI unit of resistance is ohm.

• resistance depends on the length, nature of the material, thickness, temperature.

Resistivity :

• the resistance of a unit length and unit area of cross section of the material of the conductor is called resistivity.

• it's SI unit is ohm-m .

• it depends on nature of the material and average relaxation time.

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Hope it is useful...!!