Question

what is power ?explain with formula.​

Answer 1

Answer:

In physics, power is the amount of energy transferred or converted per unit time. In the International System of Units, the unit of power is the watt, equal to one joule per second. In older works, power is sometimes called activity. Power is a scalar quantity.

Power = Work / time. P = W / t

Explanation:

Answer 2

The capacity to do work is termed Energy. The Energy expended to do work in unit time is termed as Power. It is represented as P.

Power Formula is articulated as,

P=Et P=Wt

or,

Where,

The Energy Consumed to do work = E

Work done = W 

Time taken= t 

In any electrical circuit, the power is computed making use of these three formulas

In regard to Voltage and current, it is articulated as

P = V×I

In regard to current and resistance, it is articulated as

P = I2R

In regard to voltage and resistance, it is articulated as

P=V2R

Where,

A voltage applied across the two ends =V,

Current flowing in the circuit = I and

Resistance = R.