A Proton Moves $0.10 \mathrm {~m}$ Along the Direction of an Electric Field of Magnitude

Multiple Choice

A proton moves $0.10 \mathrm {~m}$ along the direction of an electric field of magnitude $3.0 \mathrm {~V} / \mathrm { m }$ . What is the change in kinetic energy of the proton? $\left( e = 1.60 \times 10 ^ { - 19 } \mathrm { C } \right)$

A) $3.2 \times 10 ^ { - 20 } \mathrm {~J}$
B) $1.6 \times 10 ^ { - 20 } \mathrm {~J}$
C) $8.0 \times 10 ^ { - 21 } \mathrm {~J}$
D) $4.8 \times 10 ^ { - 20 } \mathrm {~J}$