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2 July, 04:38

The current in a simple electrical circuit is inversely proportional to the resistance. The current is 80 amps when the resistance is 50 ohms. What is the current when the resistance is 40 ohms?

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  1. 2 July, 05:00
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    I = / r where I = current and r = resistance

    80 = k / 50 so

    k = 400

    so we have I = 400/r

    when r = 40

    I = 400/40 = 10 amps
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