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6 June, 13:31

What is the potential difference across a 2.0-ohm resistor that draws 2.0 coulombs of charge per second

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  1. 6 June, 13:38
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    Potential difference ('voltage') = (resistance) x (current)

    Current = charge/time

    Current in this one = (2 coulombs/sec) = 2 Amperes

    Potential difference = (2 ohms) x (2 Amperes)

    Potential difference = 4 volts
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