Electromagnetism 1

Passing a current through a piece of wire causes a magnetic field to form around the wire.

• True
• False

Tags

NGSS.HS-PS2-5

Magnetic fields are created by moving _______.

• Atoms
• Protons
• Electric Charges
• Metals

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NGSS.HS-PS2-5

NGSS.HS-PS3-5

When an electromagnet's circuit is broken, it loses its magnetic properties.

• True
• False

Tags

NGSS.HS-PS2-5

When a bar magnet is broken in half, what is the result?

• Two north poles
• Two south poles
• Two north poles and two south poles
• The bar loses its magnetic properties

A magnet's magnetic field exists ________.

• Only on the north pole
• Only on the south pole
• On both poles
• Around the entire magnet

An electric motor converts _____________.

• mechanical energy to electrical energy.
• electrical energy to mechanical energy.
• mechanical energy to thermal energy.
• thermal energy to electrical energy.

Tags

NGSS.HS-PS3-3

An electric generator converts ___________.

• mechanical energy to electrical energy.
• electrical energy to mechanical energy.
• mechanical energy to thermal energy.
• thermal energy to electrical energy.

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NGSS.HS-PS3-3

What is one way to increase the strength of an electromagnet?

• Increase the size of the nail.
• Reduce the electric current.
• Wrap more coils of wire around the nail.
• Wrap less coils of wire around the nail.

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 did Faraday’s experiments with magnets and electromagnetic induction demonstrate?

• A. Magnetic fields are made when the electric field changes.
• B. Strong electric current makes electromagnets.
• C. Electric current is made when the magnetic field changes.
• D. Strong electromagnets make electric current.

Tags

NGSS.HS-PS2-5