Power

Power refers to the rate at which energy is transferred or used. It is measured in watts (W) or kilowatts (kW) and is typically represented by the symbol P. The power of a machine or system can be calculated by multiplying the voltage (V) by the current (I), or by dividing the work done (W) by the time (t) taken to complete it. High power systems can perform work quickly and are typically used in applications such as heavy machinery, motors, and industrial equipment, while low power systems are used for more delicate operations such as communication devices, sensors, and electronic devices.