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18 April, 12:48

An electric heater is rated 1000w, 250v. calculate the resistance

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  1. 18 April, 16:26
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    Correct answer: R = 62.5Ω

    Explanation:

    Power P = U · I = U · U/R = U²/R = > P = U²/R = > R = U²/P

    R = 250²/1000 = 62.5Ω

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