Y8 Electromagnet

What is an electromagnet?

• a temporary magnet made from current carrying wire around a magnetic metal core.
• a permanent magnet with a north and south pole

Tags

NGSS.MS-PS2-3

Which of the following is NOT part of an electromagnet?

• Wire
• Iron
• Toothpick
• Power source

How are electromagnets different from magnets?

• magnets can be turned on/off
• you can turn an electromagnet on/off
• magnets are more powerful
• magnets have a North and South pole

Tags

NGSS.MS-PS2-3

Surrounding every magnet is a __________  __________.

• magnetic field
• electrical current
• another magnet

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

While electric current is flowing through a wire, what surrounds the wire?

• a magnetic field
• a glowing light
• neutrons
• protons

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

What is the metal center of an electromagnet called?

• The current
• The wire
• The coil
• The ferromagnetic core

Where is the force of attraction the strongest on a magnet?

• at the poles
• in the middle
• above the magnet
• below the magnet

Tags

NGSS.MS-PS2-5

What happens when two bar magnets repel each other?

• The poles of the magnets pull toward each other.
• The poles of the magnets push away from each other.
• The centers of the magnets pull toward each other.
• The centers o the magnets push away from each other.

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

In order for an electromagnet to be formed, an __________ current must pass through a coil of __________ wrapped around an ________ core.

• wire, iron, electric
• electric, wire, iron
• iron, electric, wire

What happens when a wire is wound into a coil around an iron core in an electromagnet?

• the wire exolodes
• you get electrocuted 
• the magnetic field becomes stronger
• the magnetic field becomes weaker

Tags

NGSS.MS-PS2-5