GCSE Physics - Efficiency #8

The video explains energy transfer and efficiency, focusing on how devices convert input energy into useful and wasted energy. It uses examples of lamps and microwaves to illustrate efficiency calculations, emphasizing the importance of understanding efficiency in terms of both energy and power. The video also highlights common mistakes in efficiency calculations and the principle of energy conservation.

In the example provided, how much more efficient is the LED lamp compared to the incandescent bulb?

What common mistake should be avoided when calculating efficiency?