Physics Electrostatics NUMS 2024
PMDC Verified Question 24 of 131
Q.201 A particle have a charge of 1C falls through a potential difference of 5 V. The energy required by it is:
A
\( 1.6 \times 10^{-19} \text{ J} \)
B
\( 5 \times 10^{-19} \text{ J} \)
C
6 J
D
5 J
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option D: 5 J
1. Concept:

The energy gained or work done on a massive charge accelerating through an electrostatic potential is the basic product of the charge and voltage.

2. Formula:

$$ E = q \Delta V $$

3. Solution:

  • Identify total charge: \( q = 1 \text{ C} \).


  • Identify voltage: \( V = 5 \text{ V} \).


  • Substitute and multiply natively: \( E = 1 \times 5 = 5 \text{ Joules} \).


4. Why other options are incorrect:

Options A and B attempt to trick the student into using the charge of a single electron (\( 1.6 \times 10^{-19} \text{ C} \)) instead of the explicitly stated 1 Coulomb macro-charge. Option C adds the values rather than multiplying.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

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