Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test Physics Electric Potential Potential Due to a Continuous Charge Distribution
Two concentric spheres of radii R and r have positive charges q1 and q2 with equal surface charge densities. What is the electric potential at their common centre?
1
\(\frac{\sigma }{{{\epsilon_0}}}\left( {R + r} \right)\)
2
\(\frac{\sigma }{{{\epsilon_0}}}\left( {R - r} \right)\)
3
\(\frac{\sigma }{{{\epsilon_0}}}\left( {\frac{1}{R} + \frac{1}{r}} \right)\)
4
\(\frac{\sigma }{{{\epsilon_0}}}\left( {\frac{R}{r}} \right)\)
5
None of the above/More than one of the above.