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The two charges in Figure $\mathrm{P} 24.12$ are separated by a distance $d=2.00 \mathrm{~cm},$ and $Q=+5.00 \mathrm{nC.}$ Find (a) the electric potential at $A,$ (...

Question

The two charges in Figure $\mathrm{P} 24.12$ are separated by a distance $d=2.00 \mathrm{~cm},$ and $Q=+5.00 \mathrm{nC.}$ Find (a) the electric potential at $A,$ (b) the electric potential at $B$, and (c) the electric potential difference between $B$ and $A$.

The two charges in Figure $\mathrm{P} 24.12$ are separated by a distance $d=2.00 \mathrm{~cm},$ and $Q=+5.00 \mathrm{nC.}$ Find (a) the electric potential at $A,$ (b) the electric potential at $B$, and (c) the electric potential difference between $B$ and $A$.



Answers

Two point charges $q_1 = +$2.40 nC and $q_2 = -$6.50 nC are 0.100 m apart. Point $A$ is midway between them; point $B$ is 0.080 m from $q_1$ and 0.060 m from $q_2$ ($\textbf{Fig. E23.19}$). Take the electric potential to be zero at infinity. Find (a) the potential at point $A$; (b) the potential at point $B$; (c) the work done by the electric field on a charge of 2.50 nC that travels from point $B$ to point $A$.


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