Q5 - Physics 2212 Homework 5(due March 29 1 What is the...

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Physics 2212 Homework 5 (due: March 29) 1. What is the electric potential at the point P? 2. What is the electric potential at the point P? 3. The potential at the center of a 4.0-cm-diameter copper sphere is 500 V, relative to V=0 V at infinity. How much excess charge is on the sphere? 4. Find potential energy for two configurations (a) and (b) shown in Fig. Three particles have the following charges 1 2 3 1 , 5 , 10 q C q C q C μ μ μ = = = − . Which configuration has the lower energy? +2 nC P -6 nC 5 cm 5 cm +2 nC 45 0 45 0 +1 nC P +2 nC 1 cm 1 cm 1 cm 10 cm 2 q 10 cm 3 q 1 q (b) 10 cm 10 cm 10 cm 3 q 1 q 2 q (a)
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