Physics-Electric Potential
NEET Physics Electric Potential MCQ Question
Type: MCQ-numerical-Medium-Class 12
Two charges 5 × 10^–8 C and –3 × 10^–8 C are placed 16 cm apart. Assuming the potential at infinity to be zero, at what distance from the 5 × 10^–8 C charge on the line joining the two charges is the electric potential zero?
A
10.0 cm
B
6.0 cm
C
12.0 cm
D
8.0 cm
Correct Answer
Option A
Detailed Explanation
The electric potential is zero at a point where the potentials due to both charges are equal and opposite. Using the formula for potential due to a point charge, the distance can be calculated by solving the equation (5 × 10^–8) / x = (3 × 10^–8) / (16 - x) for x.
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