AIPMT PRELIMS2011Physics-Electrostatics
AIPMT PRELIMS 2011 Physics Electric potential MCQ Question
Type: MCQ-numerical-Medium-Class 12
Four electric charges +q, +q, -q and -q are placed at the corners of a square of side 2L (see figure). The electric potential at point A, midway between the two charges +q and +q, is
A
Zero
B
1/4πε₀ * 2q/L (¹⁺ √5)
C
1/4πε₀ * 2q/L (1 + 1/√5)
D
1/4πε₀ * 2q/L (1 - 1/√5)
Correct Answer
Option D
Detailed Explanation
The potential at point A is the sum of potentials due to each charge. The symmetry and positions of charges lead to the potential being 1/4πε₀ * 2q/L (1 - 1/√5).
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