Lesson 8.5 Applications of Electromagnetic Induction

Question 1

Which description correctly summarizes how an electric motor causes an axle to turn?

Revolt · Accepted Answer

The poles of the magnetic field generated around the armature are attracted to the opposite poles of the permanent magnet. As the opposite poles align, the commutator reverses the current direction so like poles are aligned and the armature continues to spin.

Question 2

The biggest difference between a motor and a generator is that, in a motor, current passes a power source, through the brushes, then the commutator. In a generator, current passes the slip rings, through the brushes, a device where the electricity is collected.

Revolt · Accepted Answer

to

Question 3

The biggest difference between a motor and a generator is that, in a motor, current passes a power source, through the brushes, then the commutator. In a generator, current passes the slip rings, through the brushes, a device where the electricity is collected.

Revolt · Accepted Answer

from

Question 4

Which electromagnet is the strongest?

Revolt · Accepted Answer

[Image: An iron bar with a coil of wire wrapped around it ...]

Question 5

Complete the statements using the drop-down menus.

Revolt · Accepted Answer

from; The biggest difference between a motor and a generator is that, in a motor, current passes a power source, through the brushes, then the commutator. In a generator, current passes the slip rings, thro: from; The biggest difference between a motor and a generator is that, in a motor, current passes a power source, through the brushes, then the commutator. In a generator, current passes the slip rings, thro: to

Question 6

X less than✔ more thanthe same as

Revolt · Accepted Answer

✔ more than

Lesson 8.5 Applications of Electromagnetic Induction Answers

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