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

the magnetic field becomes stronger

the magnetic field becomes weaker

How do you make an electromagnet?

wrap an iron nail in wire and connect it to a power source.

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 another iron nail.

What would happen if I move a bar magnet in and out of a coil of copper wire?

Electric current will flow through the wire

Electric current would disappear

It would produce a gravitational field

How could the experimenter increase the amount of electricity being induced by this experiment?

Nothing, the amount of electricity cannot be increased

The voltmeter is at 0 in this image. How would you manipulate the experiment to create electricity (measured in volts)?

Flip the magnet around so the North pole is facing out

Add more coils around the paper cylinder

What is one way to increase the current in a wire?

Take the wire off of the magnet

Can you produce current in a wire with a magnet that is sitting still?

No; the magnetic field has to be changing to excite the electrons

Yes; having a magnet near a wire is enough to excite the electrons

No; magnets cannot create electricity

Why is magnetic induction important?

Electromagnets are very versatile

Every electric motor uses induction

Because it's an easy way to produce electricity

What can electromagnets do that regular magnets can't?

They are both the same in every way

Electromagnetism

Quiz

•

Physics

•

9th - 12th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-PS2-5, MS-PS2-3, HS-PS3-5

+2

Standards-aligned

Test Student

Used 353+ times

FREE Resource

20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

Tags

NGSS.HS-PS2-5

2.

MULTIPLE CHOICE QUESTION

1 min • 1 pt

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

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Surrounding every moving electron is

(a) a magnetic field

(b) an electric field

(c) both of these

(d) none of these

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

As electrons move, they make

A. electromagnetism.

B. auroras.

C. ferromagnetism.

D. magnetic fields.

Tags

NGSS.HS-PS2-5

NGSS.HS-PS3-5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

7.

MULTIPLE CHOICE QUESTION

5 mins • 1 pt

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

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Electromagnetism

20 questions

Electromagnetic Induction (pHet simulation) is...

This is a picture of a simple electromagnet. How can the electromagnet be made stronger?

Surrounding every moving electron is

What conclusion can you draw from this graph?

As electrons move, they make

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

What is true about electricity and magnetic fields?

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

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

How do you make an electromagnet?

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