Which of the following does not represent electrical power in a circuit?

(a) I2R

(b) IR2

(c) VI

(d) V2 /R

Asked by Vishal kumar | 2 years ago |  178

##### Solution :-

Explanation:

Electrical power is given by the expression P = VI. (1)

According to Ohm’s law,

V = IR

Substituting the value of V in (1), we get

P = (IR) × I

P = I 2R

Similarly, from Ohm’s law,

I = V/R

Substituting the value of I in (1), we get

P = V × V/R = V 2 /R

From this, it is clear that the equation IR2 does not represent electrical power in a circuit.

Answered by Shivani Kumari | 2 years ago

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