Relationship between power , voltage , resistance and current?

Question

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Answer 1

V=IR

Voltage = Current x Resistance

P = VI

Power = Voltage x Current.

And

P = I*I*R

Power = Current squared x Resistance

Answer 2

V = I*R

P = (V^2)/R = (I^2)*R = V*I

Here, P = power, V = voltage, I = current, R = resistance

You can also find the reactive power by this equation :

P = V*I*cos(theta)

Here, theta = phase angle between voltage and current.