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24 September, 05:00

An electric motor is traversed by 3.10²º electrons in 6 seconds. Determine the intensity of the current passing through the motor.

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  1. 24 September, 08:56
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    Current is the amount of charged passed divided by elapsed time.

    I = Q/Δt

    I = current, Q = charge, Δt = elapsed time

    We also know an electron has a charge of 1.6*10⁻¹⁹C, so let us find the total charge by multiplying this unit of charge by the total number of electrons:

    Q = 1.6*10⁻¹⁹ (3*10²⁰) = 48C

    We also have Δt = 6s, so let's plug these values in to solve for I:

    I = 48/6

    I = 8A
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