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Two infinite linear charges are placed p...

Two infinite linear charges are placed parallel to each other at a distance `0.1 m` from each other. If the linear charge density on each is `5 mu C//m`, then the force acting on a unit length of each linear charge will be:

A

`2.5 N//m`

B

`3.25 N//m`

C

`4.5 N//m`

D

`7.5 N//m`

Text Solution

Verified by Experts

The correct Answer is:
C
Force between two line charges On a unit length
`=(2K lambda)/(r) xx lambda=(2xx9xx10^(9)xx(5xx10^(-6))^(2))/(0.1)=4.5 N//m`
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