the potential difference between a cloud and the earth is 1000000000. in a lightning bolt 20c of charge pass from the cloud to the earth in a time of 0.004. calculate the current that flows from the cloud to the earth.
current= charge/time=20coulombs/.004seconds=5000 amperes
To calculate the current that flows from the cloud to the earth during a lightning bolt, we need to use Ohm's Law: I = Q/t, where I represents the current, Q represents the charge, and t represents the time.
In this case, we have Q = 20 C (coulombs) and t = 0.004 s (seconds).
Now, we can plug these values into the equation to calculate the current:
I = 20 C / 0.004 s = 5000 A (amperes).
Therefore, the current that flows from the cloud to the earth during the lightning bolt is 5000 A.