Question

Define resistance of material and write its si unit

Answer 1

Resistance is the ability of the conductor to resist the flow of electric current through it.

SI unit of resistance is Ohms written by symbol Ω

Answer 2

Explanation:

• The property of material to resist the flow of electric current is called its resistance. It can be calculated using the below formula i.e.

$R=\rho\dfrac{l}{A}$

l is length of wire

A is area of cross section

$\rho$ is resistivity

The SI unit of resistance is ohms.

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