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Electricity, Four charges are the corners of a square...
Four charges are at the corners of a square, with B and C on opposite corners. Charges A and D, on the other two corners, have equal charge, while both B and C have a charge of +1.0 C. Assume that the charge on A is such that the force on B is zero. Note F_(BC) that magnitude of Coulomb force between charges B and C. Note F_(AD) the magnitude of the Coulomb force between charges A and D. What is the ratio F_(BC)/F_(AD)?
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