Magnetism and Electromagnetism

Front

What happens when current running through a wire is placed in the field of a permanent magnet?

Back

Electrical energy is transformed into mechanical energy.

Front

What do electric currents passing through wires produce?

Back

A magnetic field.

Front

What do all permanent magnets have?

Back

Two magnetic poles.

Front

What type of current is produced in a battery?

Back

Direct current.

Front

What does a plant generating electric current transmit?

Back

Alternating current at high voltages, but is used at low voltages.

Front

What is magnetism?

Back

A force that can attract or repel certain materials, primarily metals like iron.

Front

What is an electromagnet?

Back

A type of magnet in which the magnetic field is produced by an electric current.

Front

What is the difference between alternating current (AC) and direct current (DC)?

Back

AC changes direction periodically, while DC flows in one direction.

Front

What is a solenoid?

Back

A coil of wire that produces a magnetic field when an electric current passes through it.

Front

What is the role of magnetic poles?

Back

Magnetic poles are the regions of a magnet where the magnetic force is strongest; they come in pairs: north and south.