$A$ proton has a mass $1.67 \times 10^{-27} \,kg$ and charge $+1.6 \times 10^{-19} \,C$. If the proton is accelerated through a potential difference of $1$ million volts,then the kinetic energy is ......... $J$.
- A$1.6 \times 10^{-15}$
- B$1.6 \times 10^{-13}$
- C$1.6 \times 10^{-21}$
- D$3.2 \times 10^{-13}$
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