1.13 Magnetism and Electromagnetism Concepts(flash cards)

Front

How are the bar magnet and the electromagnet you built similar?

Back

Both bar magnets and electromagnets produce magnetic fields and can attract or repel other magnetic materials.

Front

How are the bar magnet and the electromagnet you built different?

Back

Bar magnets are permanent magnets, while electromagnets are temporary and require electric current to generate a magnetic field.

Front

What is a magnetic field?

Back

A magnetic field is a region around a magnet where magnetic forces can be detected.

Front

How are electric current and magnetic fields related?

Back

whenever electricity moves, it generates a magnetic field, meaning that moving charges produce a magnetic field, and the strength of this field increases with the strength of the current flowing through a wire.

Front

Name three technologies that use electricity and magnetism:

Back

Electric motors, transformers, and magnetic resonance imaging (MRI) machines.

Front

Describe the relationship between the direction of an electric current and the direction of the magnetic field it produces:

Back

the direction of a magnetic field produced by an electric current is perpendicular to the direction of the current

Front

Explain why a compass needle points north:

Back

A compass needle points north because it aligns itself with the Earth's magnetic field, which has a magnetic north pole.