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
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