if the electric potential due to a point charge depends on choosing an arbitrary reference e point, why do we not have to choose a reference point if we measure the potential difference?
if the electric potential due to a point charge depends on choosing an arbitrary reference e point, why do we not have to choose a reference point if we measure the potential difference?
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter26: Electric Potential
Section: Chapter Questions
Problem 51PQ
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Question
if the electric potential due to a point charge depends on choosing an arbitrary reference e point, why do we not have to choose a reference point if we measure the potential difference?
Expert Solution
Step 1
Determining potential due to a charge is given by
V = kq/r
Here charge is q and distance is r from the charge.
Thus, distance is required for calculating the magnitude of potential.
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