Which equation correctly relates the change in electric potential energy of a test…

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Which equation correctly relates the change in electric potential energy

\Delta U

of a test charge

q

to the corresponding electric potential difference

\Delta V

between two points? (a)

\displaystyle \Delta V = -\dfrac{\Delta U}{q}

(b)

\displaystyle \Delta V = \dfrac{\Delta U}{|q|}

(c)

\displaystyle \Delta V = \dfrac{\Delta U}{q}

(d)

\displaystyle \Delta V = \dfrac{1}{2}\,\dfrac{\Delta U}{q}