Working dynamics of a bicycle dynamo is completely opposite to the electric motor, Explain.
1 Answer
Given figure is bicycle dynamo. Here dynamo converts mechanical energy to electrical energy but electric motor converts electrical energy into mechanical energy. Thus a dynamo and electric motor have opposite working mechanism.
The dynamo has a wheel that touches the back tyre. As the bicycle moves, the wheel turns a magnet inside a coil. This induces enough electricity to run the bicycle's lights. The faster the bicycle moves, the greater the induced voltage - and the brighter the lights.Dynamo - a device that makes direct current electric power using electromagnetism. It is also known as a generator, however the term generator normally refers to an "alternator" which creates alternating current power. ... They simply use chemical reaction to make and store electricity.The generator/dynamo is made up of stationary magnets (stator) which create a powerful magnetic field, and a rotating magnet (rotor) which distorts and cuts through the magnetic lines of flux of the stator. When the rotor cuts through lines of magnetic flux it makes electricity.
A bottle dynamo or sidewall dynamo is a small electrical generator for bicycles employed to power a bicycle's lights.A typical bike generator can produce 100 watts.
If you pedal for an hour a day, 30 days a month, that's (30 x 100=) 3000 watt-hours, or 3 kWh.