What is the magnitude of the net electric force on charge A in the figure (Figure 1) ? Assume that q1 = 1.5nC and q2 = 4.8nC
due B :
F1 = kq1q2/d^2 = 9x 10^9 x 1.5 x 10-9 x 1.5 x 10-9 / 0.01^2
= 2.025 x 10-4 N
due to B :
F2 = - 9x10^9 x 1.5x 10-9 x 4.8 x 10-9 / 0.02^2
= - 1.62 x 10-4
fnet = F1 +F2 = 0.405 x 10-4 N
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