The differences in electric potential or voltage (we use both terms interchangea

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The differences in electric potential or voltage (we use both terms interchangeably) can be used to determine changes in the electric potential of a charged object. If I have a particle with a charge q that is moving between two points in space which have a difference in electric potential (or voltage) of ?V, the change in electric potential energy of that object is given by ?EPE = q ?V. When answering the following questions remember that a gain in electric potential energy is given by ?EPE > 0 and a loss of electric potential energy is given by ?EPE < 0. Suppose a particle with a charge of +4.40 nC moves from a point where the electric potential is 39.0 V to a point where the electric potential is 68.0 V. What is the change in electric potential energy? Suppose a particle with a charge of +4.40 nC is released from rest at a point where the electric potential is 68.0 V. Just like a block sliding down a ramp as it loses potential energy, it will gain kinetic energy. What is the kinetic energy of the particle when it has reached a point in space where the electric potential is 39.0 V?

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