(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Four identical point charges (+4.0 mC) are placed at the

corners of a square which has 20-cm sides. How much work is required to

assemble this charge arrangement starting with each of the charges a very large

distance from any of the other charges?

3. The attempt at a solution

I want to know if this is the right formula and answer:

U=K(q1q2/r12 + q1q3/r13 + q1q4/r14 + q2q3/r23 + q2q4/r24 + q3q4/r34)

i got 3.9 as the answer.

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# Homework Help: Work on Electricity (is this right?)

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