Simple Phenomena Of Magnetism

9.Complete the sentence:

10.Match each material with its magnetic property:

11.Arrange the following steps in the correct order to show how an electromagnet can be made stronger:

12.A magnetic material that is not a magnet will always be attracted to a magnet, regardless of which pole is held close to it.

13.A student brings a bar magnet near a suspended metal rod. The rod is repelled by the north pole of the magnet. What can be concluded about the rod?

14.Like magnetic poles attract each other.

15.Which of the following is a property of a permanent magnet?

16.Which of the following can be used to increase the strength of an electromagnet? (Select all that apply)

17.Match each material to its magnetic property.

18.Arrange the following steps in the correct order to make an electromagnet that can be turned on and off.

19.Magnetic field lines are closer together where the field is weaker.

20.Arrange the following steps in the correct order to magnetise a steel bar using a permanent magnet (stroke method).

21.Induced magnetism always causes a force of attraction between a magnet and an induced magnet.

22.A soft iron bar is placed near the north pole of a strong permanent magnet. Which statement about the induced magnetism in the iron bar is correct?

23.Which of the following materials are magnetic? (Select all that apply)

24.The magnetic field is strongest where the field lines are furthest apart.

25.A student brings the north pole of a bar magnet near one end of a steel rod. The rod is attracted to the magnet. Which statement about the steel rod is correct?

26.Which of the following metals are magnetic? (Select all that apply)

27.The magnetic field lines around a bar magnet go from the south pole to the north pole outside the magnet.

28.Match each material with its magnetic property.

29.Arrange the following steps in the correct order to magnetise a steel bar using the stroking method with a permanent magnet.

30.A student has four rods: one is a permanent magnet, one is a magnetic material, one is non-magnetic, and one is an unmagnetised steel bar. Using only a known bar magnet, which test correctly identifies the permanent magnet?

31.The strength of an electromagnet can be increased by increasing the number of turns of wire on the coil.

32.A piece of aluminium is brought near a strong bar magnet. What will happen?

33.A student has four unlabelled rods: P, Q, R, and S. The student brings the north pole of a known bar magnet near each rod and observes the following: P is attracted, Q is repelled, R is attracted, S shows no effect. The student then brings the south pole of the magnet near each rod: P is attracted, Q is attracted, R is attracted, S shows no effect. Which rod is a permanent magnet?

34.An induced magnet always produces a force of repulsion when brought near a permanent magnet.

35.A student sets up an electromagnet by winding a coil of wire around a soft iron core and connecting it to a battery. Which change would cause the electromagnet to attract more paper clips?

36.The diagram shows the magnetic field around a bar magnet. A plotting compass is placed at a point near the magnet, outside it. In which direction does the north pole of the compass needle point?

37.A student wants to demagnetise a steel bar. Which of the following methods can be used? (Select all that apply)

38.Steel is a magnetic material because it contains iron.

39.Magnetic field lines go from the south pole to the north pole outside the magnet.

40.A student wants to increase the strength of an electromagnet. Which of the following changes will achieve this? (Select all that apply)

41.A student has a steel rod and a bar magnet. The student strokes the rod repeatedly with one pole of the magnet, always in the same direction. Which statement describes the result?

42.A student sets up an electromagnet with a soft iron core. She connects the coil to a variable power supply and an ammeter. She wants to increase the strength of the electromagnet. Which of the following changes will increase the strength?

43.State one use of a permanent magnet.

44.Complete the sentence about induced magnetism.

45.Complete the sentence about magnetic materials.

46.Complete the sentence about magnetic field lines.

47.Explain why a magnetic material that is not a magnet is always attracted to a magnet, regardless of which pole is held close to it.

48.Describe how you would use a known bar magnet to determine whether an unmarked metal bar is a magnetic material, a permanent magnet, or a non-magnetic material.

49.Explain why an induced magnet is always attracted to a permanent magnet, regardless of which pole of the permanent magnet is brought near it.

50.Describe how you would use a plotting compass to map the magnetic field around a bar magnet. Include how you determine the direction of the field lines.