Physics Electrostatics UHS 2024
PMDC Verified Question 16 of 131
Q.193 Which one of the following is NOT a feature of electric forces?
A
They act on charges
B
They act on masses
C
They can be attractive
D
They can be repulsive
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: They act on masses
1. Concept:

Electrostatic forces are a fundamental interaction strictly governed by the property of electric charge, entirely independent of the object's mass.

2. Formula:

$$ F_E = k \frac{q_1 q_2}{r^2} $$

3. Solution:

  • The formula for electric force dictates that objects must possess a non-zero charge (\( q \)) to interact electrostatically.


  • Gravitational forces act on masses. Electric forces inherently do not care about mass; a massive uncharged neutron feels exactly zero electric force.


4. Why other options are incorrect:

Options A, C, and D accurately describe the literal defining traits of electric forces: they require charges, and unlike gravity, they possess dual polarity (both attraction and repulsion).

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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