Physics · Electrostatics
Two thin coaxial rings, each of radius a and having charges -Q and +Q respectively, are separated by a distance s. The potential difference between the centres of the two rings is:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Q2πε0 [ 1a + 1√(s2 + a2) ]
- 2Q4πε0 [ 1a - 1√(s2 + a2) ]
- 3Q4πε0 [ 1a + 1√(s2 + a2) ]
- 4Q2πε0 [ 1a - 1√(s2 + a2) ]✓
Correct answer
Q2πε0 [ 1a - 1√(s2 + a2) ]
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