Electric Power and Energy

Electrical Energy

S.I Unit: Joule (J)

Formula:

E = QV or E = VIt or E = I^2Rt or E = \frac{V^2}{R}t

Electrical Power

S.I Unit: Watt (W)

Formula:

P = \frac{E}{t} or P = VI or P = I^2R or P = \frac{V^2}{R}