Electromagnets and Electric Motors

What two forces are required for generators and electric motors to work? 

• magnetism and thermal 

• electricity and thermal 

• electricity and magnetism 

• magnetism and radiant 

Tags

NGSS.MS-PS2-3

Electric fields are often associated with what other kind of field? 

• Magnetic Fields 

• Nuclear Fields 

• Particle Fields 

• Corn Fields 

Tags

NGSS.MS-PS2-3

What is the transfer of energy in when you plug in a motor and it spins?

• chemical to mechanical

• electrical to mechanical

• mechanical to electrical

• physical to potential

Tags

NGSS.MS-PS3-5

Iron, Nickel and cobalt are all __________________ materials

• Shiny

• poles

• magnetic

• cold

Tags

NGSS.MS-PS2-3

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

What type of energy comes OUT of a generator?

• Mechanical

• Electrical

• Thermal

• Potential

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-3

NGSS.HS-PS3-5

Which of the following lists would make an electromagnet?

• Battery, pencil, and wire

• Battery, nail, and string

• Battery, stick, and string

• Battery, iron rod, and wire

Tags

NGSS.MS-PS2-3

Which of the following are true for motors? Select all that apply.

• Motors transform electrical energy into mechanical energy.

• Motors contain an electromagnet that spins between a permanent magnet.

• Motors transform chemical energy into electrical energy.

• A motor spins due to the attraction and repulsion of magnets.

Tags

NGSS.MS-PS3-5

What happens to the strength of an electromagnet as you add more coils around it?

• The strength of the electromagnet decreases.

• The strength of the electromagnet increases.

• The strength of the electromagnet does not change.

• The strength of the electromagnet stops completely.

Tags

NGSS.MS-PS2-3

What can you do to make electromagnets stronger?

• Increase number of coils of wire.

• Increase number of batteries used.

• Both A and B.

• Neither A nor B.

Tags

NGSS.MS-PS2-3