Question

Which of the following is the largest unit of energy?

• A. Electron volt
• B. Joule
• C. Calorie
• D. Erg

Hint:

Always convert all energy units to joules for accurate comparison.

Answer 1

The Correct Option is B

To compare energy units, we convert all to joules: \begin{itemize} \item \( 1 \text{ electron volt} = 1.
6 \times 10^{-19} \, \text{J} \) \item \( 1 \text{ erg} = 10^{-7} \, \text{J} \) \item \( 1 \text{ calorie} = 4.
18 \, \text{J} \) \item \( 1 \text{ Joule} = 1 \, \text{J} \) \end{itemize} Among the given options, Joule is the largest unit.