A Proton That Is Initially at Rest Is Accelerated Through $500 \mathrm {~V}$

Multiple Choice

A proton that is initially at rest is accelerated through an electric potential difference of magnitude $500 \mathrm {~V}$ . How much kinetic energy does it gain? $\left( e = 1.60 \times 10 ^ { - 19 } \mathrm { C } \right)$

A) $8.0 \times 10 ^ { - 17 } \mathrm {~J}$
B) $500 \mathrm {~J}$
C) $1.6 \times 10 ^ { - 19 } \mathrm {~J}$
D) $800 \mathrm {~J}$