Question

can potential difference be negative??

Is work done around a circular path zero? Why? ​

Answer 1

Yes negative ho sakta hai

Answer 2

Yes, potential difference can be negative.

.Work Done by a body moving in a circular path is Zero . ( Provided it is a uniform circular motion).

This is so because, the Centripetal force on the body at any instant , is directed towards the centre of the circular path and the direction of displacement at that instant is along the tangent drawn to the circular path i.e. normal to the direction of force on the body.

There is also a case that when a body completes one round while moving in a circular path , the displacement becomes zero and hence, work done also becomes zero

see the attachment⛄⤵