Question

electric power is given by ​

Answer 1

Explanation:

In other words, Energy = power x time and Power = voltage x current. Therefore electrical power is related to energy and the unit given for electrical energy is the watt-seconds or joules. Electrical power can also be defined as the rate of by which energy is transferred.

Answer 2

Answer:

Watt

Explanation:

Power is the rate of flow of Energy .

We know that rate of anything means the unit divided by time.

Therefore, P = W/t

(where, W = Work Done and t = time)

Now, Work Done = VIt

Thus, P = VIt/t

=> Power (P) = Voltage (V) × Current (I)

=> P = VI

Since, James Watt invented it, its S.I unit is named as Watt (W).

It has many more formulae derived, like :

P = IR × I [Ohm's Law (V = IR)]

=> P = I²R

Also,

P = V × V/R (Ohm's Law)

=> P = V²/R

Many more can be derived via the formulae of Current and Ohm's Law.

Hope I could answer your question :)