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MHT CET Physics question

PhysicsElectric Charges and FieldsMHT CET

The maximum charge that can be conveyed to a conducting sphere of diameter 20 cm (breakdown field of air ) is

Answer: (B)

Solution

gives \dfrac{E_{\max}R^2}{k}\dfrac{2×10^6×(0.1)^2}{9×10^9}\dfrac$29

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Question ID VK-075672