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MHT CET Physics question

PhysicsElectrostatic Potential and CapacitanceMHT CET

Two insulated metal spheres of radii 20 cm and 25 cm charged to a potential of 150 V and 100 V respectively are connected by means of metallic wire. What is the charge on the first sphere?

Answer: (D)

Solution

Capacitances in e.s.u. equal the radii (20 and 25), so the common potential is V

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Question ID VK-075429