Physics Electrostatics DUHS 2023
PMDC Verified Question 52 of 131
Q.169 The amount of energy required in moving an electron of charge (e) by the application of 1volt potential difference equals to
A
1 keV
B
1 MeV
C
1 GeV
D
1 eV
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: 1 eV
1. Concept:

This question is literally stating the textbook definition of the electron-volt unit, a standard energy metric used heavily in quantum mechanics and particle physics.

2. Formula:

$$ E = q \Delta V $$

3. Solution:

  • When \( q \) equals exactly 1 fundamental electron charge (\( 1e \)).


  • And \( \Delta V \) equals exactly 1 Volt.


  • The mathematical result is \( 1e \times 1\text{V} = 1 \text{ eV} \) (One electron-volt).


4. Why other options are incorrect:

The other options include metric prefixes: kilo (1000 eV), Mega (1,000,000 eV), and Giga (1,000,000,000 eV), which apply to much higher energy particle accelerators, not a simple 1-volt drop.

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