Science
Define electric power. When do we say that the power consumed in an electric circuit is 1 watt ?
Answer
Electric power is defined as the rate at which electrical energy is consumed or converted into other forms of energy in an electric circuit.
Mathematically, electric power is given as :
P = V × I
where
- P is power,
- V is potential difference, and
- I is current
On putting, V = 1 V and I = 1 A
P = 1 x 1 = 1 W
So, the power consumed in a circuit is said to be 1 watt when 1 ampere of current flows through a conductor having a potential difference of 1 volt across its ends.
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