Definition For Power In Physics

Power is a scalar quantity.

Definition for power in physics. Power work time or p w t. In older works power is sometimes called activity. Units of power are those of work or energy per unit time such as foot pounds per minute. In other words it is a measurement of how fast you are using energy.

In physics power is the rate in which work is done or energy is transferred over time. It can be misunderstood by most of the students. Definition power is the rate at which work is done or the rate at which energy is transformed or transferred. Power 60 watts.

Energy 60 x 12 0 72 kw h. The output power of a motor is the product of the torque that the motor generates and the angular velocity of its output shaft. More on that later watt wouldn t have thought about power they same way we do today. Say one of them does the work in 5 seconds and the other does in 8 seconds.

In physics power is used to describe the rate at which energy is used. It is higher when work is done faster lower when it s slower. Therefore the average power for our light bulbs will be 1 44 0 72 24 0 092 kw. For example same work is done by two different people with different time.

Power power is the rate of work done in a unit of time. Power in science and engineering time rate of doing work or delivering energy expressible as the amount of work done w or energy transferred divided by the time interval t or w t a given amount of work can be done by a low powered motor in a long time or by a high powered motor in a short time. In the international system of units the unit of power is the watt equal to one joule per second. Power was a new way to compare his engines to the machines they were designed to replace horses.

However power just shows us the time that the work requires. The equation that describes power is. For him power was the product of force and velocity. In this scenario the power consumed during the whole day varies as one bulb is turned on for only 12 hours so we have to calculate average power average power total energy consumed total time taken.