Question

Two point charges Q1 and Q2 are 1.90 m apart, and their total charge is 19.3 HC. If the force of repulsion between them is 0.213 N, what are magnitudes of the two charges? Enter the smaller charge in the first box 21 Submit Answer Tries 0/10 If one charge attracts the other with a force of 0.140N, what are the magnitudes of the two charges if their total charge is also 19.3 μC? The charges are at a distance of 1.90 m apart. Note that you may need to solve a quadratic equation to reach your answer. Enter the charge with a smaller magnitude in the first box. 21 Submit Answer Tries 0/10

Answer 1

Concepts used in the answer:- Coulomb's Law

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F = Q_1 Q_2/4 pi epsilon_0(1.9m)^2 or, 0.213N = Q_1 Q_2/4 pi epsilon_0(1.9m)^2-(1) and Q_1 + Q_2 = 19.3 mu c-(II) solving (1) and (II) we get Q_1 = 6.88 times 10^-6c Q_2 = 1.24 times 10^-5 c F = Q_1 Q_2/4 pi epsilon_0 r^2 or, 0.14N = Q_1Q_1/4 pi epsilon_0 (1.9m)^2-(1) and Q_1 + Q_2 = 19.3 mu c-(II) solving (1) and (II) we get Q_1 = 3.57 times 10^-6 c Q_2 = 1.57 times 10^-5 c