Alternators and Dynamos

The video explains how alternators and dynamos use magnetic fields to generate electricity. Alternators produce alternating current, while dynamos produce direct current. The video covers the role of commutation rings in determining the type of current generated and explains how changes in magnetic field, coil turns, and rotation speed affect the current's size and frequency.

What is the main difference between an alternator and a dynamo in terms of the current they produce?

Explain how a potential difference is induced in a wire coil when it passes through a magnetic field.

Describe the role of commutation rings in the operation of an alternator.

What happens to the potential difference as the wire coil moves out of the magnetic field?

How does increasing the size of the magnetic field affect the current generated by an alternator or dynamo?