Electromagnetic Force

If you replace the paper clip with a plastic spoon, what happens?

• The bulb doesn't light
• The bulb is dimmer
• The wires get hot
• There is no change

If you replace the paper clip with a plastic spoon, what is the plastic spoon acting as?

• A conductor
• A diode
• An insulator
• A switch

An example of a good conductor is

• copper
• sand
• plastic

Electromagnets are strong magnets that can be turned on and off. 

• True
• False

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 electricuted 
• the magnetic field becomes stronger
• the magnetic field becomes weaker

Tags

NGSS.MS-PS2-3

NGSS.MS-PS2-5

Electric currents produce _____________

• electron clouds

• magnetic fields

• sound waves

Tags

NGSS.MS-PS2-5

What is the metal center of an electromagnet called?

• The current
• the wire
• the coil
• the core

How do you make an electromagnet stronger?

• Add a motor and/or lightbulbs
• Add more light bulbs and/or wire coils
• add more wire coils and/or a switch
• add more wire coils and/or batteries

___________ wires keep electrons on course & protect us from the dangerous flow of electricity. 

• Insulated
• Conducted