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Chapter 4: Q25-1E (page 841)

Lightning Strikes. During lightning strikes from a cloud to the ground, currents as high as 25,000 A can occur and last for about 40 ms. How much charge is transferred from the cloud to the earth during such a strike?

Short Answer

Expert verified

The charge transferred from the cloud to the earth during a lightning strike is螖Q=1.0鈥凛

Step by step solution

01

 Step 1: Definition of charge transferred and its formula.

Consider the expression for the current is:

I=螖蚕螖迟 鈥�.. (1)

Here,螖Qis the change in charge andis the change in time.

02

Step 2:Calculate the charge transferred.

Given that the current during a lighting is 25000A and the time frame of a lightning is40脳10鈭�6鈥剆.

Substitute the values in equation (1) and solve.

螖Q=I脳螖t螖Q=25000鈥剆40脳10鈭�6鈥剆螖Q=1.0鈥凛

Therefore,the charge transferred from the cloud to the earth during a lightning strike is螖Q=1.0鈥凛

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