Question

The mass of the proton is 1840 times that of electron. If it is accelerated by applying a potential difference of 1 kV, the kinetic energy of proton is –

• A. 1840 keV
• B. $\frac{1}{1840}$keV
• C. 1 keV
• D. 920 keV

Answer 1

Answer: (C)

1 keV

Answer 2

When a body carrying charge equal to that of electron is accelerated by a potential difference of 1 volt, its kinetic energy is equal to 1 eV