7.3 MAGNETISM

7.3 MAGNETISM

by KASMAWATI Moe

Multiple Choice

A magnet will pick up a nail, but not a penny because the nail

• has rust on it.
• is lighter than the penny.
• has a sharp point.
• contains iron.

Multiple Choice

A type of magnet that has temporary magnetic effect when electric current flows through it.

This refer to

• Electric

• Electronic

• Electrostatic

• Electromagnet

Multiple Choice

The pattern of magnetic field depends on the shape of conductor.

• True

• False

Multiple Choice

The pattern of magnetic field produced is not affected by the direction of the current that flows in the conductor.

• True

• False

Multiple Choice

To determine magnetic field direction around straight wire conductor we used

• Right hand grip rule

• Left hand grip rule

Multiple Choice

Magnetic field near to the wire is stronger.

• True

• False

Multiple Choice

Direction of current in the wire is

• Upwards

• Downwards

Multiple Choice

Thumb shows the direction of

• Magnetic field

• Current

Multiple Choice

Pole of X and Y is

• X : South

  Y : North

• X : North

  Y : South

Multiple Choice

Diagram shows magnetic field around

• Straight wire

• Coil

• Solenoid

Multiple Choice

What is pole X and Y?

• X : North

  Y : South

• X : South

  Y : North

Multiple Choice

Thumb shows the direction of

• Magnetic field

• Current

Multiple Choice

When you put ring magnets on a pencil, the magnets stay apart from each other because

• magnets are too weak to stay together.
• material that makes up the magnets aren't magnetic.
• same poles of the magnets are facing each other.
• the pencil stops the force of the magnets.

Multiple Choice

Which of these is attracted to a magnet?

• iron nail
• copper penny
• piece of paper
• notebook

Multiple Choice

Magnets will stick to refrigerator doors because the doors are 

• Painted with plastic.
• Made of metal.
• Easy to open. 
• Heavy.

Multiple Choice

Which of these can move a nail lying on the table without touching the nail?

• A magnet
• String
• A wire
• A ruler

Multiple Choice

Which is NOT a use of magnets?

• Generating electricity
• Holding cabinet doors closed
• Sorting paper from plastic
• Storing information on computer hard drives.

Multiple Choice

_{^{The magnet's shown will}}

• not move
• attract
• repel
• all of the above

Multiple Choice

_{^{The magnet's shown will}}

• not move
• attract
• repel
• all of the above

Multiple Choice

Amy used a magnet to hold one piece of paper on the refrigerator. Later, she tried to use the same magnet to hold a stack of four pieces of paper, and the magnet wouldn't stick to the fridge. Why did this happen?

• The magnet needs glue
• The magnet couldn't hold due to the thickness of the paper
• Paper repels magnets
• A magnet isn't attracted to the refrigerator.

Multiple Choice

What do you call it when two magnets come together?

• attract
• iron
• poles
• repel

Multiple Choice

Magnets attract things made of

• copper
• iron
• wood
• plastic

Multiple Choice

All magnets have 2

• fields
• colors
• poles
• all of the above

Multiple Choice

The two poles on a magnet are

• north and east
• north and west
• south and north
• south and west