If a current of $4 A$ passing through a circuit generates $64 W$ of power, what is the resistance of the circuit?

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Answer 1 · 2018-03-07T06:59:50

The resistance is $=4Omega$

The current is $I=4A$

The power is $P=64W$

The power is

$P=UI$

and Ohm's Law is

$U=RI$

Therefore,

$P=UI=R*I*I=RI^2$

$R=P/I^2=64/4^2=4Omega$

If a current of 4 A4 A passing through a circuit generates 64 W64 W of power, what is the resistance of the circuit?