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19 February, 11:31

The electric potential difference of a 125 F capacitor is measured across the terminals of the capacitor and found to be 9.0 V. The potential energy of the capacitor, rounded to two significant figures, is

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  1. 19 February, 15:01
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    E=1/2CV^2

    where E is potential energy, C is capacitance and V is the voltage.

    E=1/2*125*9^2

    E=1/2*125*81

    E=5062.5

    E=5100J to 2 significant figures.
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