Example

Using the power equation we can solve for I:

P = I*V, so 5 Watts = I * (6 volts), or

I = 5 Watts / 6 volts = 0.833 amps.

Now we can use Ohm’s Law to solve for R:

V = I*R, so

R = V/I = 6 volts / 0.833 amps = 7.2 W .

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