Question

Generate an explanation for the following formula: P = I2R

Answer 1

Explanation:

Power is the product of current and voltage:

P = IV

And from Ohm's law, voltage is the product of current and resistance:

V = IR

So substituting this expression for V into the power equation:

P = I (IR)

P = I² R

Answer 2

Answer:

P = IV

Ohms law gives voltage as the product of current and resistance i.e.  

V =IR

Replacing this in the previous equation gives

P= I(IR) = I^2R  

Explanation:

applying ohms law V=IR