Magnetism - 3.P.3B.1 & 3.P.3B.2

A(n) ______________ is produced when an electrical current passes through a coil of wire wrapped around any core that can be magnetized.

• electric circuit

• electromagnet

• magnetic field

• light bulb

When an electrical current is running through the wire in an electromagnet, the magnetic core produces a _______________.

• magnetic field

• simple circuit

• magnet circuit

• battery

Which of the following will attract a magnetic force?

• Two magnets with both N & N facing each other

• Two magnets with both S & S facing each other

• Two magnets with N & S facing each other

• Magnets will always attract regardless of the direction of the poles.

Which of the following will repel a magnetic force? Select ALL that apply:

• Two magnets with both N & N facing each other

• Two magnets with both S & S facing each other

• Two magnets with N & S facing each other

• Magnets will always attract regardless of the direction of the poles.

Select ALL of the materials that can be used to create an electromagnet:

• conductive wire

• wooden insulator

• battery

• iron nail/bolt

• plastic straw

Magnets and electromagnets have the following unique properties:

• strength, attraction, repulsion, magnetism

• strength, attraction, electricity, magnetism

• polarity, electricity, magnetism, attraction

• polarity, repulsion, strength, attraction

Magnets attract certain types of

• wood, such as sticks, logs, and pencils

• plastic, such as straws, bags, and toys

• metals, such as iron, nickel, and steel

• all of the above

True or False:

Like poles attract each other, while unlike poles repel each other.

• True

• False; opposite poles attract

Which of the following would most likely make an electromagnet stronger?

• Adding another battery

• Using a longer wire

• Removing the nail

• Wrapping the wire loosely around the nail

Where is the magnetic pull or attraction the strongest on a magnet?

• At the center of the magnet

• At its poles

• Only on one pole

• It is the same strength everywhere