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Mini-Quiz: Generating Electric Current

by Ron Kurtus (revised 10 December 2012)

Take this Mini-Quiz to check your understanding of the lesson material.

1. What happens when you change the direction of a wire passing through a magnetic field?

You can't change directions because of the commutator

The direction of the magnetic field changes, as indicated in the meter

The direction of the current changes, provided the wire is part of a circuit

2. What happens when you speed up an electric generator?

The current increases

It goes from AC to DC

It becomes an electric motor

3. Why is wire wound in so many loops in commercial generators?

Many loops are needed to make AC electricity

Voltage depends on how many loops are used

No one is sure why they do it that way

If you got all three correct, you are on your way to becoming a Champion in Physics. If you had problems, you had better look over the material again.

Knowing you did your best makes you feel good

Resources and references

Ron Kurtus' Credentials


DC and AC Electricity Resources

Physics Resources


Top-rated books on Electric Power Generation

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