Two point charges ( 10 0nC and 10 0nC) are located 8 00 cm apart (a) What is the electric potential energy when a point charge of 4 2nC is placed at points a, b, and c in turn Let U 0 when the 4 2nC charge is far away (but the other two are still in place) (b) How much work would an external force have to do to move the point charge from b to a 8 00 cm 8 00 cm 4 00 4 00 4 00 cm cm c

Question: Two point charges (+ 10.0nC and 10.0nC) are located 8.00 cm apart. (a) What is the electric potential energy when a point charge of 4.2nC

Two point charges (+ 10.0nC and ˆ’ 10.0nC) are located 8.00 cm apart.
(a) What is the electric potential energy when a point charge of ˆ’ 4.2nC is placed at points a, b, and c in turn? Let U = 0 when the ˆ’ 4.2nC charge is far away (but the other two are still in place).
(b) How much work would an external force have to do to move the point charge from b to a?

8.00 cm 8.00 cm 4.00 4.00 4.00 cm cm c

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a Let q L q R 100 nC Use Eqs 175 and 179 Find the potential energy of the point charge at each ... View full answer

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