Question

The physical quantity which is not a unit of energy is

• A. $volt-coulomb$
• B. $MeV-s$
• C. $henry{\left(ampere\right)}^2$
• D. $farad-{\left(volt\right)}^2$

Answer 1

The correct option is B

$MeV-s$

The explanation for the correct option:

In case of option B,

1. MeV-s is not an energy unit
2. Mega electron volt-second, or MeV-s
3. It is the unit of $Energy\times time$.

The explanation for incorrect options:

In case of option A,

1. $volt-coulomb$ is the unit of energy.
2. Coulomb is the unit of charge.
3. For instance, $E=qV$.

In case of option C,

1. $henry{\left(ampere\right)}^2$ is also the unit of energy.
2. Henry is the unit of inductance.
3. For circuit having inductor the energy will be $E=\frac{1}{2}L{I}^2$.

In case of option D,

1. $farad-{\left(volt\right)}^2$ is also the unit of energy.
2. Farad is the unit of capacitance.
3. For circuit having capacitor the stored energy will be $E=C{V}^2$.

Hence, option B is the correct answer.