- #1
JJones_86
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Homework Statement
Two charges, -20.6 microC and +4.2 microC, are fixed in place and separated by 3.3 m.
(a) At what spot along a line through the charges is the net electric field zero? Locate this spot relative to the position of the positive charge.
(b) What would be the magnitude of the force on a third charge +24.1 microC placed at this spot?
Homework Equations
F = k (q1*q2)/r^2
The Attempt at a Solution
None
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I've got part A to be 2.71679m from the positive charge, I just don't know how to do part B. The equation I posted seems to me irrelevant because there are now 3 charges. Any help is appreciated.