Electromagnets

What type of magnet that can turned on and off?

• electromagnet

• permanent magnet

• electricity

• battery

What are the components of the electromagnets?

• battery, wire and bulb

• battery , copper wire and paper clips

• battery, copper wire and iron nail

• battery, wire and aluminum

What is the role of the battery in the electromagnet?

• It provides light energy for the electromagnet.

• It provides magnetic field for the electromagnet.

• It provides sound energy for the electromagnet.

• It provides the power source for the electromagnet.

What would happen if you took one end of the wire off the battery?

• The nail will be a magnet.

• The nail would no longer be a magnet

• Nothing will happened.

• The nail will heats up.

Which part of the electromagnets turned into a magnet when electricity flows through a coiled wire?

• Battery

• Copper wire

• Iron Nail

• Bulb

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

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
• excited, hair, apple

Tags

NGSS.MS-PS2-3

What is most likely to happen when the switch is closed?

• A magnetic field should be produced
• The nail will rust
• The battery will explode
• The wire will catch on fire

How do electromagnets differ from regular magnets? 

• A. They  can be turned off and on 
• B. Their polarity can be reversed
• C. Their strength can be changed
• D. All of the above

Tags

NGSS.MS-PS2-3

How can you increase the strength of an electromagnet?

• By moving the iron core to create friction.

• By adding more coils around the iron core.

• By decreasing the amount of current in the wire.

• By heating up the electromagnet.

Tags

NGSS.MS-PS2-3