Electricity and Magnetism

Front

Magnetism

Back

the force of attraction or repulsion of magnetic materials

Front

Magnetic field

Back

an area of magnetism surrounding a magnet that applies a force (a push or pull) without actually touching an object

Front

If placed in a magnetic field, which of the following materials would be affected? a compass, wood chips, plastic paper clips, pieces of glass

Back

a compass

Front

How does the electromagnet in the diagram above demonstrate the relationship between magnetism and electricity?

Back

The wire in the electric circuit is wrapped around an iron core producing a magnetic field.

Front

What is flowing through the electromagnet?

Back

electric current

Front

What must occur for an electromagnet to lose its magnetism?

Back

The electric current must stop flowing in the circuit.

Front

What energy transformation occurs in this device?

Back

mechanical energy to electrical energy

Front

How is the device above different from an electric motor?

Back

Electric motors turn electrical energy into mechanical energy.

Front

What is the best description of a generator?

Back

A generator produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet.

Front

How do turbines affect generators?

Back

They rotate the magnets.