Question

Electron volt is a unit of:

• A. potential difference
• B. charge
• C. energy
• D. capacity

Hint:

Though named using “volt”, an electron volt measures textbfenergy, not voltage: [ 1 texteV = 1.6 times 10^-19 textJ ]

Answer 1

The Correct Option is C

Step 1: Recall the definition of electron volt. An electron volt (eV) is defined as the amount of energy gained by an electron when it is accelerated through a potential difference of \(1\ \text{volt}\). Step 2: Express electron volt mathematically. \[ 1\ \text{eV} = 1.602 \times 10^{-19}\ \text{joule} \] Step 3: Analyze the options.

(A) Potential difference — measured in volts
(B) Charge — measured in coulombs
(C) Energy — correct ✔
(D) Capacity — measured in farads
Step 4: Final conclusion. Electron volt is a unit of \(\boxed{\text{energy}}\).