Consider dropping a ball from rest. This ball moves from a state of high gravita

Question

Consider dropping a ball from rest. This ball moves from a state of high gravitational potential energy to one of low gravitational potential energy as it falls to the ground. Similarly, charges move from a state of high electric potential energy to one of low electric potential energy.

Part D

What is the electric potential energy of an electron at the negative end of the cable, relative to the positive end of the cable? In other words, assume that the electric potential of the positive terminal is 0 V and that of the negative terminal is ?12V. Recall that e=1.60

Explanation / Answer

Part F

W = 1.92 * 10-18 J

Because moving a negative charge from the positive to the negative terminal of the battery would increase its electric potential energy, it would take positive work to move the charge. This is simliar to lifting a ball upward. You do positive work on the ball to increase its gravitational potential energy.

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