Electromagnetism

Electromagnetic Induction (pHet simulation) is...

• the use of the movement of magnets around a coil of wire to create an electrical current through the wire

• the use of the movement of electricity around a coil of wire to create an electrical current through the wire

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NGSS.HS-PS2-5

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.HS-PS2-5

Surrounding every moving electron is 

• (a) a magnetic field
• (b) an electric field
• (c) both of these
• (d) none of these

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

What conclusion can you draw from this graph?

• As current increases, magnetic strength decreases.

• As current increases, magnetic strength increases.

• As current decreases, magnetic strength increases.

• There is no relationship between current and magnetic strength.

Tags

NGSS.HS-PS2-5

As electrons move, they make

• A. electromagnetism.
• B. auroras.
• C. ferromagnetism.
• D. magnetic fields.

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

What is created when a magnet moves through a coil of wire?

• A. an electromagnet
• B. a ferromagnet
• C. a solenoid
• D. an electric current

Tags

NGSS.HS-PS2-5

What is true about electricity and magnetic fields?

• Electricity is needed to create any magnet.
• Electricity always creates a magnetic field.
• Electricity is stronger than a magnetic field.
• Electricity prevents magnetic fields from occurring.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

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-PS2-3

NGSS.MS-PS2-5

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.HS-PS2-5

How do you make an electromagnet?

• wrap a battery in wire and connect it to an iron nail.
• wrap a wire with another wire and connect it to an iron nail.
• wrap an iron nail in wire and connect it to a power source.
• wrap an iron nail in wire and connect it to another iron nail.

Tags

NGSS.HS-PS2-5