Magnetism review

Select the one true statement with respect to the following metals: Copper, Zinc, Brass (alloy), Aluminium

• They are only attracted to Magnetic materials

• They are only repelled by Magnetic Materials

• They are both attracted to and repelled by Magnetic Materials

• They are neither attracted to nor repelled by Magnetic Materials

Which of the following materials would be attracted to a magnet? (Select the 3 correct answers)

• Steel

• Magnesium

• Cobalt

• Nicket

• Zinc

On a compass the needle is a small bar magnet. Which pole of that magnet points to (seeks) the Earths magnetic South?

• North

• South

True or False - Earths Magnetic North pole is at the same location as Earths Geographic North Pole

• True

• False

Which three factors affect strength of an electromagnet? (select 3)

• Number of coils

• the metal in the coils

• soft iron core

• size of the current in the coils

Look at the diagram. In each part of the diagram (A,B,C,D) a blue magnet is placed on a table and afterwards a green magnet is held near to it.

For Diagram A which way does the blue magnet move? (select one)

• Up

• Down

• Left

• Right

Look at the diagram. In each part of the diagram (A,B,C,D) a blue magnet is placed on a table and afterwards a green magnet is held near to it.

For Diagram B which way does the blue magnet move? (select one)

• Up

• Down

• Left

• Right

Look at the diagram. In each part of the diagram (A,B,C,D) a blue magnet is placed on a table and afterwards a green magnet is held near to it.

For Diagram C which way does the blue magnet move? (select one)

• Up

• Down

• Left

• Right

Look at the diagram. In each part of the diagram (A,B,C,D) a blue magnet is placed on a table and afterwards a green magnet is held near to it.

For Diagram D which way does the blue magnet move? (select one)

• Up

• Down

• Left

• Right

A Student makes 4 electromagnets. Each one is made by winding some wire into a coil around a piece of metal as the core and then the student runs an electric current in each wire.

Which of them will be the strongest? (select one)

• 50 turns, low current, copper core

• 100 turns, high current, iron core

• 50 turns, low current, iron core

• 100 turns, low current, iron core