Electrostatics Question 701

Question: The insulation property of air breaks down when the electric field is 3×106Vm1. The maximum charge that can be given to a sphere of diameter 5 m is approximately

Options:

A) 2×102C

B) 2×103C

C) 2×104C

D) 2×105C

Show Answer

Answer:

Correct Answer: B

Solution:

[b] E=kQr2Q=E×r2k=3×106×(2.5)29×109

=2×103C



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