Show Instantaneous Power is equal to Force into Velocity | Commercial Unit of Electrical Energy | Class 11 | Physics | Chapter 4
Instantaneous Power as the Product of Force and Velocity
In physics, power is defined as the rate at which work is done. Instantaneous power refers to the power at a specific moment in time. It is the product of the force applied to an object and the velocity of that object at that particular moment. This relationship shows how quickly energy is being transferred or transformed by the force acting on the object.
For example, in a car engine, the force generated by the engine and the speed at which the car is moving combine to determine the instantaneous power output of the engine. This concept is crucial in understanding the performance and efficiency of mechanical systems.
Commercial Unit of Electrical Energy
The commercial unit of electrical energy is the kilowatt-hour (kWh). This unit is widely used by electric utility companies to measure and bill energy consumption. One kilowatt-hour represents the energy used when a device with a power rating of one kilowatt operates for one hour.
For instance, if you use a 100-watt light bulb for 10 hours, it will consume 1 kilowatt-hour of energy. This unit helps in understanding and managing electricity usage in households and industries, making it easier to quantify and control energy consumption and costs.
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