Energy Transfer

Energy - Devices - Motor.

A motor transfers electrical energy into rotational energy.
Something which spins round has rotational energy.
Rotational energy is a form of kinetic energy.

Motors have a wide variety of uses and are found in
cars, clocks, drills, fans, fridges, hair dryers, toothbrushes, vacuum cleaners,
water pumps (for fish tanks, central heating, fire fighting) washing machines,
hard disk drives, DVD players, electric vehicles and industrial equipment
(including extruders, fork-lift trucks, lathes, mills, hoists, robots and winches).

We would expect the efficiency of a motor to be between 70 and 85%.
The wasted energy is heat and sound.

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