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7 March, 20:37

A circuit breaker is rated for a current of 25 a rms at a voltage of 240 v rms. (a) what is the largest value of imax that the breaker can carry?

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  1. 7 March, 20:44
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    The largest value of current that the breaker can carry = Imax=35.4A

    Explanation:

    Rms value of current = Irms = 25 A

    The rms current and the maximum current are related as

    Imax = √2 Irms

    Imax=√2 (25)

    Imax=35.4 A

    Thus the maximum current carried by the breaker = 35.4 A
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