Question

Fill in the following blanks with suitable words :; Resistance is measured in ............. The resistance of a wire increases as the length ...............; as the temperature ................; and as the cross-sectional area ............

Answer 1

ohm

increase

increase

decrease

Answer 2

Explanation:

Since we know that resistance is the property  which opposes the flow of current in the circuit.

Resistance is given by

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

Where l = length of the wire, A =area of cross-section and $\rho$ is the resistivity of the material.

The S.I.unit of resistance is ohm.

The temperature dependenace of the resistance is given as

$R_{t} =R_{0}(1 + \alpha (\Delta T))$

So,

Resistance is measured in Ohm The resistance of a wire increases as the length Increase ; as the temperature Increase ; and as the cross-sectional area Decrease.