How much power is produced if a voltage of 12V

kromo8hdcd

kromo8hdcd

Answered question

2022-05-20

How much power is produced if a voltage of 12V is applied to a circuit with a resistance of 144 Ω ?

Answer & Explanation

Cecelia Mullins

Cecelia Mullins

Beginner2022-05-21Added 10 answers

We can use the formulas P=IV (Power = Current × Voltage)
and Ohm's Law (V=IR; Voltage = Current × Resistance) to find the power from Voltage and Resistance.
In the first equation P=IV, we do not have the Current (I), so we rearrange Ohm's law into:
I = V R
We substitute this into P=IV
P = V R × V
and we get
P = V 2 R
Now we just substitute the values from the question into the formula:
P = 12 V 2 144 Ω = 1 W
And we can see that the answer is 1Watt (W)

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