Questions
The voltage of clouds is with respect to ground. In a lightning strike lasting 100 ms, a charge of 4 C is delivered to the ground. The power of lightning strike is
detailed solution
Correct option is C
Work done in delivering q coulomb of charge from clouds to ground.W=Vq=4 × 106 × 4=16 × 106 JThe power of lightning strike isP=Wt = 16 × 1060.1 = 160 × 106 W=160 MWTalk to our academic expert!
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A resistor R is connected across a battery of emf 12 V. It observed that terminal potential differenceis 9 V and the power delivered to resistor is 18 W. Internal resistance of the battery ‘r’ and the resistance R are respectively
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