Magnetism and Electromagnetism - Test Test

Question 1

As Keisha runs the generator, which best describes what should happen to the needle that measures electric current?

Revolt · Accepted Answer

B: It will move back and forth between a large positive and a large negative value.

Question 2

What should Lionel observe during his investigation?

Revolt · Accepted Answer

C: A large current forms, drops to zero, then a smaller current forms in the opposite direction.

Question 3

The wire is then connected to a battery so that a current flows down the wire. How will the compasses point once the current is flowing?

Revolt · Accepted Answer

C: Image with description A long wire that is vertical and standing on a steel plate. There are 4 compasses surrounding it and all of the needles are pointing clockwise.

Question 4

Which pair of magnets is aligned so they will repel each other?

Revolt · Accepted Answer

A: X

Question 5

Which is true of a step-down transformer but not a step-up transformer?

Revolt · Accepted Answer

D: The primary winding has more coils than the secondary winding.

Question 6

A magnetically soft material is placed in a strong magnetic field. What is the most likely outcome?

Revolt · Accepted Answer

B: It will become a temporary magnet because the domains will easily realign.

Question 7

Which is the best procedure to make a permanent magnet?

Revolt · Accepted Answer

C: placing a magnetically hard material in a strong magnetic field

Question 8

Craig is modeling the discovery of electromagnetism. Which procedure should he use?

Revolt · Accepted Answer

A: bringing a compass near a wire that has an electric current

Question 9

Which device converts electrical energy into kinetic energy?

Revolt · Accepted Answer

C: an electric motor

Question 10

Which describes Hans Oersted’s work with electricity and magnetism?

Revolt · Accepted Answer

D: He discovered electromagnetism after seeing a compass needle deflected by a flowing electric current.

Magnetism and Electromagnetism - Test Test Answers

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