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The potential gradient along the length ...

The potential gradient along the length of a uniform wire is 20 V/m. If B and Care the two points at 40 cm and 80 cm on a metre wire along the wire, then the potential difference between B and C will be:

A

`8 V`

B

`6 V`

C

`16 V`

D

`20 V`

Text Solution

Verified by Experts

The correct Answer is:
a
Distance between two points
`= 80 - 40`
`= 40 cm = 0.4 m`
Potential gradient = 20 V/m
`therefore` Potential difference
= Potential gradient `xx` length
`= 20 xx 0.4 = 8V `
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