Ace Formula Of Power

For historical reasons the horsepower is occasionally used to describe the power delivered by a machine.

Formula of power. Also register to BYJUS-The Learning App for loads of interactive engaging physics-related. As is implied by the equation for power a unit of power is equivalent to a unit of work divided by a unit of time. Sometimes the power of motor vehicles and other machines is given in terms of Horsepower hp which is approximately equal to 7457 watts.

According to the power formula a unit of power is equal to a unit of work divided by a unit of time. In addition one horsepower equals 750 Watt. Electric power is the rate per unit time at which electrical energy is transferred by an electric circuitThe SI unit of power is the watt one joule per second.

An electric machine makes use of 300 J of energy to do work in 10s. Work done W 300 J Time taken t 10 s. This formula states that the consumption of energy per unit of time is called power.

You can check this by dividing 432 watts by 108 watts and seeing that the ratio between them is indeed 4. Power P Work time -1 Joule second -1. However the objects speed v is just s divided by t so the equation breaks down to.

For any given resistance in the motors it is basically the resistance of the coil this formula explains that the current can be controlled by applied voltage. Also a watt is equal to Joule second. Thus a Watt is equivalent to a Joulesecond.

Besides due to historical reasons power is occasionally used to describe the power delivered by a machine. Power is the product of voltage and the current. Here E stands for energy in joule and t stands for time in seconds.