Question

2 small spheres each carrying a charge q are placed r m apart and they interact with a force f. if one of the sphere is taken around the oyher once in a circular path the work done will be

Answer 1

work done will be zero because the path is perpendicular to the direction of force of central ball.
w=f.×scos©
Got it?

Answer 2

Answer: 0

Step-by-step explanation:

Work done can be written as,

W=F.x=Fx cos θ

Where θ is the angle between force and displacement.

Here, the information is not sufficient to answer the question, because what is the force, and what is the displacement?

If the particle is moving only under the influence of electric force, then the force and the displacement will be perpendicular to each other. So, w = 0.

If the external force is applied, then we have to know the force value and if the particle completes one complete round around the another charge, then net displacement becomes zero. Then again w = 0. So, displacement value is also needed.

Hope it helps......

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