How much power is produced if a voltage of $15 V$ is applied to a circuit with a resistance of $5 Omega$ ?

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Answer 1 · 2016-05-19T00:27:31

Power is $45$ $W$

$"Current in this circuit" = "voltage"/ "resistance"$
i.e. $I =V/R$

so $I= 15/5$ = $3$ $A$

Power= $"voltage" xx "current"$ i.e. $P = V.I$ = $15 xx 3$ = $45 W$ .
Or $I^2 xx R$ = $3xx3 xx5$ = $45$ $W$ .

where $V$ =voltage $I$ = current $R$ = Resistance .

How much power is produced if a voltage of 15 V15 V is applied to a circuit with a resistance of 5 Omega5 Omega?