Physics-Electric Potential
NEET Physics Electric Potential MCQ Question
Type: MCQ-numerical-Hard-Class 12
Two point charges q1 = 3 μC and q2 = -4 μC are separated by a distance of 0.5 m. What is the potential energy of the system?
A
-0.216 J
B
0.216 J
C
-0.144 J
D
0.144 J
Correct Answer
Option A
Detailed Explanation
The potential energy U of a system of two charges q1 and q2 separated by distance r12 is given by U = (1/4πε0) * (q1 * q2 / r12). Substituting the given values, U = (1/4π(8.85 x 10^-12)) * ((3 x 10^-6) * (-4 x 10^-6) / 0.5), which yields -0.216 J.
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