Question

A flash of lighting carries 10c of charge which flows for 0.01 sec. What is the current. If the voltage is 10mv. What is energy

Answer 1

I = q/t
so I = 10c/ 0.01sec
I= 10*100/1
I=1000c/1sec
I= 1000A

now v= 10ma = 10*10 to power minus 3

energy = VIT
V= potential difference
I= current
T= time
e= 10*10 to power minus 3*1000*0.01
e= 0.1 J
so energy = 0.1 joule