7.3

Question 1

What is the induced potential?

Answer 1

The potential difference caused by the constant movement of a wire into a magnetic field.

Question 2

What is the generator effect?

Answer 2

When a potential difference is caused by the constant movement of a wire in a complete circuit into a magnetic field, inducing a current.

Question 2

What are the factors that affect the size and direction of the induced potential?

Answer 2

Changing size:
- Stronger magnetic field
- Increase speed of movement
- Shape into coil and increase number of turns.

Changing direction:
- Moving magnet in and out of wire/solenoid.
- Switch poles of magnet

Question 3

Describe how an alternator generates an alternating current.

Answer 3

1. The maximum potential different is when the coil is horizontal.
   2.

Question 4

Describe how a dynamo generates a direct current.