Question

What are the differences between resistance and resistivity?
(class 10 CBSE SAMPLE PAPER 2017-18 SCIENCE)

Answer 1

Differences between resistance and resistivity are:

**Resistance: the property of a material due to which it opposes the flow of current through it is called resistance.

Resistivity: Resistivity of a material is the resistance offered by 1 m length of wire of material having an area of cross section of 1 m².

**The resistance of a conductor depends on its length and thickness.

The resistivity of a material does not depend on its length or thickness and is the characteristic of the given material.

**R=V/I(potential difference /)current

ρ(rho)= R×A/l (Resistance× area of cross section/ length of the material)

**SI unit of resistance is Ohm(Ω)

SI unit of Resistivity is ohm metre(Ωm)

HOPE THIS WILL HELP YOU....

Answer 2

ANSWER
.........



RESISTANCE


1. THE SI UNIT OF THE RESISTANCE IS OHM

2. The resistance of the material depends on the length, cross-section and area of conductor.


➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️ ➡️


RESISTIVITY


1. SI UNIT OF THE RESISTIVITY IS OHM METER

2. resistivity depends on the nature and temperature of the material.