Physics-Coulomb's Law
NEET Physics Coulomb's Law MCQ Question
Type: MCQ-numerical-Medium-Class 12
Two point charges q1 = 3 μC and q2 = -6 μC are placed 4 cm apart in vacuum. Calculate the magnitude of the electrostatic force between them using Coulomb's law.
A
2.7 N
B
4.05 N
C
5.4 N
D
6.75 N
Correct Answer
Option B
Detailed Explanation
Using Coulomb's law, F = k * |q1 * q2| / r², where k = 9 × 10^9 N m²/C², q1 = 3 × 10^-6 C, q2 = 6 × 10^-6 C, and r = 0.04 m. The calculation gives F = 4.05 N.
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