P26_023 - second, we multiply by (10 3 W / kW)(3600 s / h)...

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23. The energy stored by a capacitor is given by U = 1 2 CV 2 ,where V is the potential diference across its plates. We convert the given value oF the energy to Joules. Since a Joule is a watt
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Unformatted text preview: second, we multiply by (10 3 W / kW)(3600 s / h) to obtain 10 kW h = 3 . 6 10 7 J. Thus, C = 2 U V 2 = 2(3 . 6 10 7 J) (1000 V) 2 = 72 ....
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