Practice # 6 AC Theory

Front

What is induced when a conductor is moved through a magnetic field?

Back

Electromotive force (EMF)

Front

What is the term for the induced voltage or current flowing at any instant during a cycle?

Back

Instantaneous value

Front

What is induced in each side of a loop conductor when it is rotated in a magnetic field?

Back

Voltage

Front

What is the largest instantaneous value called?

Back

Peak value

Front

What do we call a series of changes that returns to the starting point and then starts again?

Back

Cycle

Front

Define electromotive force (EMF).

Back

The voltage generated by a changing magnetic field or by the motion of a conductor through a magnetic field.

Front

What is the difference between average value and instantaneous value?

Back

Average value is the mean of all values over a cycle, while instantaneous value is the value at a specific moment.

Front

What is the significance of peak value in AC theory?

Back

Peak value represents the maximum voltage or current in an AC waveform.

Front

Explain the concept of a cycle in electrical terms.

Back

A cycle refers to one complete sequence of alternating current or voltage, including all changes from positive to negative and back.

Front

What happens to voltage when a conductor is rotated in a magnetic field?

Back

Voltage is induced in the conductor due to electromagnetic induction.