NEST2019PhysicsElectrostatics
A charge +q is distributed over a thin ring of radius r with line charge density =q ^2 /( r) . Note that the ring is in the x-y plane and is the angle made by r with the x -axis. The work done by the electric force in displacing a point charge +Q from the center of the ring to infinity is
Options
- Aequal to q Q 8 ₀ r .
- Bequal to zero only if the path is a straight line perpendicular to the plane of the ring.
- Calways zero because electrostatic field is conservative.
- Dequal to q Q 4 ₀ r .
Correct answer
D. equal to q Q 4 ₀ r .
Step-by-step solution
No solution available.