The work done by an electric field on a charged particle is given by:

$\overline{){\mathbf{W}}{\mathbf{=}}{\mathbf{q}}{\mathbf{E}}{\mathbf{d}}}$, where **q** is the charge, **E** is the electric field, and **d **is the displacement.** **

In which case does an electric field do positive work on a charged particle?

a. A negative charge moves opposite to the direction of the electric field.

b. A positive charge completes one elliptical path around a stationary positive charge.

c. A positive charge is moved to a point of higher potential energy.

d. A positive charge completes one circular path around a stationary positive charge.

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