Question

Students want to build a simple motor to demonstrate the relationship between magnetism and electricity. Each student group has a wooden block, paper clips, a battery, and some copper wire. What additional material is necessary to build a simple motor?





A.

An iron nail is necessary to produce a temporary magnetic field.
B.

A magnet is necessary to produce a permanent magnetic field.
C.

An iron nail is necessary to act as the electrical circuit load.
D.

A magnet is necessary to act as the electrical circuit load.

Answer 1

Answer:

B. A magnet is necessary to produce a permanent magnetic field.

Explanation:

When building a simple motor, a permanent magnet is necessary to produce a magnetic field in which opposite North South polarity which will help in rotating the main copper core when the battery is connected.