Question

an: electric field and electric potential due to positive charge distributed at the surface of copper sapphire

Answer 1

Answer:

Since the spheres are far apart compared to their radii, the charge distribution on each sphere may be taken as uniform. You may use Gauss's law to find that the electric field at the surface of each sphere is E=k*q/r2, where k is the coulomb constant, q is the charge.

hope it helps,

have a nice day and pls mark as brainiest...

Answer 2

Answer is A.

The statement is true as it gives the definition of electrical potential at a point