Question

The Length of the wire of the potentiometer is 10 metres. What will be the value of the voltage gradient when 2 volts electromotive force is applied as it ends

Answer 1

Given:

d = 10 m

V = 2V

To find:

E =?

Explanation:

A potential gradient is the rate of change of the potential with respect to displacement i.e. spatial derivative, or gradient.

This quantity frequently happens in equations of physical processes because it leads to some form of flux.

$\displaystyle E = \frac{V}{d}$

where

E =  potential gradient

V = Voltage

d = length of wire

E  = $\displaystyle \frac{2}{10}$

E = 0.2 V/m

∴ 0.2 V/m will be the value of the voltage gradient when 2 volts electromotive force is applied as it end points.