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Homework Statement
A +30μC charge is placed 32cm from an identical charge. How much work would be required to move a +0.50μC test charge from a point midway between them to a point 10cm closer to one of the charges.
Homework Equations
W = qV
V = kQ/r
The Attempt at a Solution
Tried solving with +30μC as the Q value, r as 0.32m, and q as the test charge but I'm getting this wrong. The answer is 1.08 Joules. I know that the work done = ΔPE between the two locations, but I'm not sure how to calculate this given that BOTH charges on the ends are pushing it away...