Practice # 1 Magnetism

Front

What is the unit of electric resistance?

Back

Ohm

Front

A magnet that will retain its magnetism long after the magnetizing force has been removed is a:

Back

Permanent magnet

Front

The property of an object to attract certain metallic substances is known as:

Back

Magnetism

Front

What does the addition of a soft iron core do for a current-carrying coil?

Back

Increases the number of flux lines and increases their concentration.

Front

An accumulation of electric charge on the surface of an object is known as:

Back

Static electricity.

Front

What is the definition of magnetism?

Back

Magnetism is the property of certain materials to attract or repel other materials, particularly metals.

Front

What is a permanent magnet?

Back

A permanent magnet is a magnet that maintains its magnetic properties without the need for an external magnetic field.

Front

What is static electricity?

Back

Static electricity is the accumulation of electric charge on the surface of an object.

Front

What is the role of a soft iron core in electromagnets?

Back

The soft iron core enhances the magnetic field produced by the coil.

Front

What is the difference between static electricity and current electricity?

Back

Static electricity is the buildup of charge, while current electricity is the flow of electric charge.