A flash of lightning carries 10C of charge which flows for 0.01s.What is the current?if the voltage is 10MV,what is the energy?
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Answer:Energy refers to the ability to do work and is denoted by SI unit Joules.
Sol:
Q = 10C, t= 0.01s
I = Q/t
= 10/0.01
= 1000A
The current is 100A
Potential difference = W/Q
Thus, W= p.d. X Q 10 X 10^6 X 10
=100 X 10^6
=100 MJ
Explanation:
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