power dc circuit :
The power taken by a load from a dc supply is given by the product of reading of an ammeter and a voltmeter when connected in the circuit . POWER ,P=VI
It should be remembered that the ammeter and voltmeter require power for their operation and allowance must be made for this. at AC network power, P= VICOS$
$ = Angle between V and I
The power taken by a load from a dc supply is given by the product of reading of an ammeter and a voltmeter when connected in the circuit . POWER ,P=VI
It should be remembered that the ammeter and voltmeter require power for their operation and allowance must be made for this. at AC network power, P= VICOS$
$ = Angle between V and I
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