Physics Electrostatics UHS 2023
PMDC Verified Question 36 of 131
Q.153 As per Coulomb's law, the force of attraction or repulsion between two-point charges is directly proportional to the:
A
Sum of the magnitude of charges
B
Square of the distance between them
C
Product of the magnitude of charges
D
Cube of the distance
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Product of the magnitude of charges
1. Concept:

Coulomb derived mathematically that the strength of the electrostatic pull or push depends on the multiplied interaction of the two charge magnitudes involved.

2. Formula:

$$ F \propto q_1 \times q_2 $$

3. Solution:

  • The numerator of the Coulomb equation strictly dictates a multiplicative product (\( q_1 \cdot q_2 \)), meaning if you double one charge, the total mutual force doubles for both.


4. Why other options are incorrect:

Option A (sum) is algebraically incorrect. Options B and D refer to the spatial relationship, but force is inversely proportional to the square of the distance, not directly.

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