NEET Physics Electric Potential MCQ Question
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?
10.0 cm
6.0 cm
12.0 cm
8.0 cm
Correct Answer
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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