Consider two charged spheres,one with charge +2 C and the other with −2 C.A proton (a positively charged particle)is at the point halfway between the spheres.What is not zero?
A)the potential energy of the proton
B)the work to move the proton from infinity to that point
C)the force on the proton
D)all of the three above are zero

Question

Quizplus · Accepted Answer

The force on the proton is not zero because it would experience a net force due to the two charged spheres. The potential energy of the proton is also not zero because there is an interaction between the proton and the two charged spheres. However, the work to move the proton from infinity to that point is zero because the electric field is zero at infinity and the proton would not require any work to be moved to the halfway point between the spheres where the electric field is non-zero.

Consider Two Charged Spheres,one with Charge +2 C and the Other