What is the relationship between the magnitude of a radial electric field and and its associated potential? Choose the correct general relationship?
The following alternatives are given:
a) E(r)= dV(r)/dr
b) E(r)= V(r)/r
c) E(r)= -dV(r)/dr
d) E(r)= -V(r)/r
The Attempt at a Solution
I know the electric field is proportional to the inverse of (r^2) and the potential is proportional to the inverse of (r). My problem lies in understanding the calculus of the above formulas. Can anyone guide me through them please?