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1. If the electric potential at some point is large, is the electric field at th

ID: 1529976 • Letter: 1

Question

1. If the electric potential at some point is large, is the electric field at that point also necessarily large or not? Explain your answer, and provide a counterexample if not.

2. Assume the electric field E in some region is uniform: it is the same at all points (equipotentail). Specifically, E has a magnitude of 5 V/m and points in the +x direction. What can you then say about the behaviour of the electric potential a) inthe x dirction and b) in the y direction. Explain your answers.

Please show work so I can follow along!

Explanation / Answer

formula for electrical potential due to point charge at a point r is

V = kq/r

1)

formula for electric field due to point charge at a point r is

E = kq/ r^2

comparing above two equations , electric field depends on the square of the distance but potential depends on the distance

both are inversily propotional to distance

as E filed has more denominator value E is less than the V

(2)

electric filed or lines of force are perpendicualr to the equipotential surface

E = dV/ dr

E. dr = dV

electric potential is maximum along + x direction

electric potential is zero in the + y direction