Question

A tiny sphere carrying a charge of 6.5 μc sits in an electric field, at a point where the electric potential is 240 v. what is the sphere's potential energy

Answer 1

The electric potential energy of the sphere is given by:
$U=qV$
where
q is the charge of the sphere
V is the potential of the electric field where the sphere is located.

The sphere in this problem has a charge of
$q=6.5 \mu C=6.5 \cdot 10^{-6} C$
while the potential is
$V=240 V$
Therefore, the electric potential energy of the sphere is
$U=qV=(6.5 \cdot 10^{-6} C)(240 V)=1.56 \cdot 10^{-3} J$