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17 May, 01:38

During lightning strikes from a cloud to the ground, currents as high as 25000 A can occur and last for about 40.0 μs. How much charge is transferred from the cloud to the earth during such a strike?

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  1. 17 May, 03:41
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    1 C.

    Explanation:

    Charge: This can be defined as the product of current and time in an electric field. The S. I unit of current is Coulombs (C)

    The formula of charge is given as,

    Q = It ... Equation 1

    Where Q = The amount of charge transferred from the cloud to the earth, I = current, t = time.

    Given: I = 25000 A, t = 40.0 μs = 40*10⁻⁶ s.

    Substitute into equation 1

    Q = 25000 (40*10⁻⁶)

    Q = 1000000 (10⁻⁶)

    Q = 1 C.

    Hence the charge transferred from the cloud = 1 C.
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