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Q.

A cloud is at a potential of 8 × 106 volt relative to the ground. A charge of 80 coulomb is transferred in lightening stroke between the cloud and the ground. Assuming the potential of the cloud to remain constant, the energy dissipated is

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a

107 joule

b

6.4 × 108 joule

c

105 joule

d

6.4 × 105 joule

answer is A.

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Detailed Solution

w=qV ; w = (8 x 106) x80 = 6.4 x108 J

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