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Power dissipated by a load is referred to as true power. True power is symbolized by the letter P and is measured in the unit of Watts (W). The formula for Real power is I²*R or V²/R.

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Do circuit breakers trip on Apparent or True Power?

It is correct to say Circuit Breakers "don't know anything about power", and "the only thing they care about is the current", however, in a real-world application, the supply voltage is constant, so i …
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