Question
(a) Find the electric field at the center of the triangular configuration of charges in Figure 18.53, given that $q_a = +2.50 \textrm{ nC}$, $q_b = -8.00 \textrm{ nC}$, and $q_c = +1.50 \textrm{ nC}$. (b) Is there any combination of charges, other than $q_a = q_b = q_c$, that will produce a zero strength electric field at the center of the triangular configuration?
1. $4.33 \times 10^3 \textrm{ N/C, } 35.0^\circ \textrm{ below the positive x-axis}$
2. No, the only configuration is $q_a = q_b = q_c$
Solution Video