24-25 Magnets & Electricity (non-contact forces) Test Review

Examine the apparatus shown in the illustration below containing two circular magnets. Notice that magnet A is levitating above magnet B due to magnetic force. Which of the following statements correctly describes what is happening in this diagram?

• A. The bottom of magnet A is a north pole, and the bottom of magnet B is also a north pole.

• B. Neither of these circular magnets have poles. This explains why magnet A is levitating.

• C. The polarity at the top of magnet B is the same as the polarity at the bottom of magnet A.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Select the items that ALWAYS have an electric charge.

• Atoms

• Neutrons

• Conductors

• Electrons

• Protons

Which of the following actions can produce an electric current in a loop of wire?

• spinning the wire near a battery

• placing a resistor at the end of the wire

• heating a switch and placing it on the wire

• moving a magnet up and down in a coil of wire

Tags

NGSS.HS-PS2-5

Which of these electromagnets would be able to lift more paper clips and why?

• Example W would lift more, because it has three batteries.

• Example X would lift more, because it has more coils around the iron core.

• Example W would lift more, because it has less coils around the iron core.

Tags

NGSS.MS-ETS1-3

NGSS.MS-PS2-5

Which one of the images below shows electrical current being induced?

• Image A

• Image B

• Image C

Tags

NGSS.HS-PS2-5

Which of the following two statements about electromagnetism are correct?

• A) A changing magnetic field can induce electric current.

• B) An electric current can produce and magnetic field.

• C) Electromagnetism has not been used in any practical way.

• D) It is possible to make a magnet that has only a single, positive pole.

• E) Electromagnetic induction was discovered in 2011.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Examine the first image and determine if it is showing magnetic attraction or magnetic repulsion.

• Repel

• Attract

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Examine the second image and determine if it is showing magnetic attraction or magnetic repulsion.

• Repel

• Attract

Tags

NGSS.MS-PS2-3

Examine the third image and determine if it is showing magnetic attraction or magnetic repulsion.

• Repel

• Attract

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Examine the fourth image and determine if it is showing magnetic attraction or magnetic repulsion.

• Repel

• Attract

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5