Answer to Question #349860 in Electric Circuits for Tee

Question #349860

Power

1
Expert's answer
2022-06-13T08:24:21-0400

Solution:

General definition of power: it is time rate of doing work or delivering energy.

"Power=\\frac{Work}{Time};" - general formula of power. Unit of power Watt [W].

"P=\\frac{W}{t};"

In the electricity,

"W=Uq;" here "U" - potential differance, q - amount of charge;

"P=\\frac{Uq}{t}=UI=\\frac{I^{2}}{R};" here - "I" current, "R" - resistance.


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