© Department of Physics, University of Guelph.

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1. Potential differences between some pairs
of
points are given below. Calculate the unknown potential differences
V_{CA}, V_{AD}, V_{DB}.

Hint: When considering potential differences one may arbitrarily assign
any point a potential of zero (rather than "zero at infinity"). E.g., if
you set V_{A} = 0, then V_{B} must be +5 V (since
V_{BA} = 5 V); continue for values of V at C and D and then
determine V_{CA} etc.