Magnets

In which of the following set-ups will the two magnets repel each other?

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Object Z was attracted to a magnet as shown in the figure below. Object Z is made of _____________.

• plastic

• steel

• wood

• glass

Based on the diagram, which statement is correct?

• Magnet D is the weakest.

• Magnet B is the strongest.

• Magnet B is weaker than Magnet D.

• Magnet A is stronger than Magnet C.

Which of the two diagrams show that the needle has been magnetised?

• A and B only

• A and D only

• B and C only

• C and D only

How can Peter increase the strength of the electromagnet? (You may choose more than one answer)

• Increase the number of batteries.

• Increase the size of the iron nail.

• Increase the number of coils around the iron nail.

• Increase the length of the wire.

Which of the following material(s) is most likely used to make the metal attached to the fish?

(You may choose more than one answer)

• cobalt

• copper

• alumnium

• iron

Which statement(s) is/are correct?

(You may choose more than one answer)

• Magnet B is the strongest.

• Magnet D is stronger than Magnet A.

• Magnet C is stronger than Magnet A.

• Magnet D is stronger than Magnet B.

Which of the statement is correct?

• The unlike poles of Magnet A and B are facing each other.

• The like poles of Magnet A and B are facing each other.

• Magnet A is lighter than Magnet B.

• Magnet B is repelling Magnet A.

Which statement correctly describes the relationship as shown in the figure?

(You may choose more than one answer)

• As the number of batteries increases, the number of nails attracted decreases.

• As the number of batteries increases, the strength of the electromagnet increases.

• As the number of batteries increases, the strength of the electromagnet decreases.

• As the number of batteries increases, the number of nails attracted increases.

James rearranged the magnets. Which of the following arrangement is not possible?

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