your legs
Depends on the power of the motor. A bicycle can have a low-power motor and still be considered a bicycle, which don't require a license.
No, not all bicycle chains come equipped with a master link.
The output of a bicycle generator is electricity, which is generated by pedaling the bicycle to power a generator that converts mechanical energy into electrical energy.
A bicycle is powered by human exertion and a motorbike by mechanical power.
Neither I or Google knows what a "hake bicycle" is.... come back with a description.
A bicycle
Well It came out in 1867
The bicycle crank is the part that connects the pedals to the chainring. Its purpose is to convert the rider's pedaling motion into rotational power that drives the chain and ultimately propels the bicycle forward. The crank's design and length affect the rider's pedaling efficiency and power output, making it a crucial component for the overall functionality of a bicycle.
A dynamo is a type of electrical generator. On a bicycle it is in contact with the wheels, so that it spins when the bike is moving. That spinning is turned into electricity, which can be used to power bicycle lights.
The generator
Depends on the voltage and amperage of the battery vs. the voltage and amperage required of the bicycle.
Pretty much like a strangely shaped torch - with the added extension that sometime they draw their power from a generator on the bicycle