Power transfer refers to the process of moving energy from one source to another, often in the context of electrical systems. This can involve transferring electricity from a power plant to homes and businesses through a network of power lines and transformers. Efficient power transfer is crucial for maintaining a stable energy supply. In mechanical systems, power transfer can occur through gears, belts, or chains that transmit energy from one component to another, such as in vehicles or machines. Understanding power transfer helps in designing systems that maximize efficiency and minimize energy loss during the process.