Electromagnetism Extra Credit

Particles with opposite charges ____________ and particles with same (or like) charges ____________.

• attract, repel

• repel, repel

• attract, attract

• repel, attract

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

• Add more coils of wire to the nail.
• Use a smaller battery.
• Reverse the poles of the magnet.
• Remove all the coils and the nail.

Tags

NGSS.MS-ETS1-1

NGSS.MS-ETS1-2

Which of the following is not a good conductor?

• Copper

• Silver

• Aluminum

• Plastic

What happens when an electric current flows through a wire?

• The wire begins to spin.

• Nothing happens.

• A field of gravity is created around the wire.

• A magnetic field is created around the wire.

Tags

NGSS.MS-PS2-3

What does this image show?

• Parallel circuit

• Series circuit

• Magnet

• Electromagnet

Tags

NGSS.MS-PS2-3

Increasing the number of coils in an electromagnet will _________ the power of the magnet.

• decrease

• increase

• not affect

The area of magnetic force around a magnet is known as its ____________.

• magnetism

• magnetic current

• magnetic field

• electric current

A current is produced when _______________ flow in a circuit.

• protons

• neutrons

• electrons

• nucleons

Tags

NGSS.MS-PS2-3

________________ are the attractive and repulsive forces between two poles.

• Magnetic forces

• Electric forces

• Magnetic charges

• Electric charges

Tags

NGSS.MS-PS2-3

Opposite charges do what?

• Attract

• Repel