Answer to Question #149265 in Electric Circuits for anis

Question

In order that work may be done,

Answer 1

Answer

Work done is given by

$dW=\int F.ds$

If force is constant then work done given by

$W=Fdcos\theta$

In order to work done zero

$\theta$ should be 90° or force and displacement should be perpendicular

So

$W=Fdcos90°\\W=0J$