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AP Physics - Chapter 24

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Section 1

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If you have a bar magnet with unlabeled poles, how could you use a compass to determine which end is the north pole?

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Date created

Mar 1, 2020

Cards (18)

Section 1

(18 cards)

If you have a bar magnet with unlabeled poles, how could you use a compass to determine which end is the north pole?

Front

Find iron metal filings and see which direction they go Use a compass, it should point at the south pole Use another bar magnet that is labeled

Back

Explain how a compass works

Front

A compass has a small magnet inside of it who's north end always points toward the south end of another magnet such as the magnetic earth.

Back

What is an electromagnet and how does it work?

Front

A temporary magnet that is produced by running an electric current through it causing the magnetic domains to align in the same direction.

Back

What is a magnetic field?

Front

The area around a magnet where a magnetic force can be experienced.

Back

Draw 2 magnets with their north poles facing one another. Add magnetic field vectors around each of the magnets.

Front

Back

What does the shape of a magnetic field depend on?

Front

The length, current, number of coils, and distance from the current

Back

List 2 different devices that use either permanent magnets or electromagnets to function.

Front

Speakers, electric motor.... others

Back

What are 2 different ways you can make a magnet weaker? Explain how these two ways reduce the strength of a magnet.

Front

Heating it, Dropping it, Hitting it against a hard surface ... because the domains are no longer aligned

Back

Is a magnetic field a vector or scalar quantity?

Front

Vector, it has magnitude and direction

Back

Which direction do magnetic field vectors point?

Front

Away from the north pole toward the south

Back

What is a solenoid?

Front

A long coil of wire with the same current passing through each loop in the coil

Back

What is a magnetic domain?

Front

Regions in a magnetic material where the magnetic moments are all lined up

Back

What happens when you break a magnet in half?

Front

You now have two magnets, each with a north and south pole

Back

What is the difference between the magnetic domains of iron that is magnetized and iron that is not magnetized?

Front

When magnetized most of them are pointing in the same direction, if not magnetized they are pointing in all different directions.

Back

What is an inherent magnetic moment?

Front

The direction the electrons are aligned. If they are all aligned together, they will produce a magnetic pull

Back

What is the right-hand rule for magnetic fields?

Front

Your right thumb pointing up is the direction as the current Your other fingers wrapped into a fist are the direction of the magnetic field

Back

The north pole of a magnet is attracted to the _ pole of another magnet and repelled by the __ pole of another magnet.

Front

south, north

Back

What 3 materials are magnetic?

Front

Iron, nickel, and cobalt

Back

AP Physics - Chapter 24

Preview this deck

If you have a bar magnet with unlabeled poles, how could you use a compass to determine which end is the north pole?

0.0

Cards (18)

If you have a bar magnet with unlabeled poles, how could you use a compass to determine which end is the north pole?

Find iron metal filings and see which direction they go Use a compass, it should point at the south pole Use another bar magnet that is labeled

Explain how a compass works

A compass has a small magnet inside of it who's north end always points toward the south end of another magnet such as the magnetic earth.

What is an electromagnet and how does it work?

A temporary magnet that is produced by running an electric current through it causing the magnetic domains to align in the same direction.

What is a magnetic field?

The area around a magnet where a magnetic force can be experienced.

Draw 2 magnets with their north poles facing one another. Add magnetic field vectors around each of the magnets.

What does the shape of a magnetic field depend on?

The length, current, number of coils, and distance from the current

List 2 different devices that use either permanent magnets or electromagnets to function.

Speakers, electric motor.... others

What are 2 different ways you can make a magnet weaker? Explain how these two ways reduce the strength of a magnet.

Heating it, Dropping it, Hitting it against a hard surface ... because the domains are no longer aligned

Is a magnetic field a vector or scalar quantity?

Vector, it has magnitude and direction

Which direction do magnetic field vectors point?

Away from the north pole toward the south

What is a solenoid?

A long coil of wire with the same current passing through each loop in the coil

What is a magnetic domain?

Regions in a magnetic material where the magnetic moments are all lined up

What happens when you break a magnet in half?

You now have two magnets, each with a north and south pole

What is the difference between the magnetic domains of iron that is magnetized and iron that is not magnetized?

When magnetized most of them are pointing in the same direction, if not magnetized they are pointing in all different directions.

What is an inherent magnetic moment?

The direction the electrons are aligned. If they are all aligned together, they will produce a magnetic pull

What is the right-hand rule for magnetic fields?

Your right thumb pointing up is the direction as the current Your other fingers wrapped into a fist are the direction of the magnetic field

The north pole of a magnet is attracted to the ___ pole of another magnet and repelled by the ____ pole of another magnet.

south, north

What 3 materials are magnetic?

Iron, nickel, and cobalt

The north pole of a magnet is attracted to the _ pole of another magnet and repelled by the __ pole of another magnet.