Question

The voltage of clouds is $4\times {10}^{6}volt$ with respect to round. In a lightening strike lasting $100msec$, a charge of $4$ coulombs is delivered to the ground. The power of lightening strike is:

• A. $160MW$
• B. $80MW$
• C. $20MW$
• D. $500KW$

Answer 1

The correct option is A $160MW$

Energy delivered to the ground = V.Q.
$=4\times {10}^6\times 4=16\times {10}^{6}Joule$
Power=$\frac{16\times {10}^6}{time}=\frac{16\times {10}^6}{100\times {10}^{-3}}=16\times {10}^7$
$=160MW$