The insulation property of air breaks down at $$E=3$$×$$106$$ volts $$/$$ metre. The maximum charge that can be given to a sphere of diameter $$5$$ m is approximately

Correct option is 22×10-3 coulomb

Questions

The insulation property of air breaks down at $E = 3 \times 10^{6} volts / metre.$ The maximum charge that can be given to a sphere of diameter 5 m is approximately

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2×10-2 coulomb

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detailed solution

Correct option is B

Electric Intensity =14π∈0×qr2 or qmax=r2E9×109=19×109×2.5×2.5×3×106 or qmax=2×10−3 coulomb

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The insulation property of air breaks down at E=3×106 volts / metre. The maximum charge that can be given to a sphere of diameter 5 m is approximately

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The insulation property of air breaks down at $E = 3 \times 10^{6} volts / metre.$ The maximum charge that can be given to a sphere of diameter 5 m is approximately