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smartdesk
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Homework Statement
What is the work done in moving a 0.2 µC point charge from corner a to b of a square abcd, when a 10 µC charge exists at the center of the square?
Homework Equations
Work or ΔU=q*V
V=kq/r
The Attempt at a Solution
V=kq/r
V=(9.0x10^9)(0.2x10^-6)/r
This is where I get stuck because there is no r given. We can assume that all the sides of the square are equal and the distance to the 10 µC charge is half of that. But I feel like an actual value should be given.