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6. A point charge of q = -2.0 µC travels from point X to point Y in an electric field, crossing
a potential rise of 200 V.
(a) Determine the work done in transferring the charge.
(b) An electric potential of -20 V exists at point Y. Determine electric potential at X and
deduce what is the change in potential energy, AU between X and Y points in the
electric field.

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