In what appears to be a single lightning bolt, there are typically several distinct strokes over the same path, each lasting on the order of 10−4 s, with an interval of about 0.05 s between them. The duration of the several strokes is about 0.20 s. Thus, although the peak current may reach a maximum of 20,000 A, the average current over the 0.20 s is much less—typically about 120 A upward. Find the charge transferred to one point on the earth's surface during a typical 0.20 s discharge.
19 q2
In what appears to be a single lightning bolt, there are typically several distinct strokes over the same path, each lasting on the order of 10−4 s, with an interval of about 0.05 s between them. The duration of the several strokes is about 0.20 s. Thus, although the peak current may reach a maximum of 20,000 A, the average current over the 0.20 s is much less—typically about 120 A upward. Find the charge transferred to one point on the earth's surface during a typical 0.20 s discharge.
The charge transferred to one point on the earth's surface during a typical discharge = 0.20 s
The average current over the 0.20 s = 120 A upward.
We know, I = Q/t (current = charge / time)
Therefore, Q = It
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