Question

When a proton is accelerated through 1V, then its kinetic energy will be :

• A. 0.5 eV
• B. 1 eV
• C. 10.4 eV
• D. 1820 eV

Answer 1

Answer: (B)

When a proton is accelerated through a potential difference of $1V$, the gain in kinetic energy is
$K=1e\times 1V=1eV$