AQA GCSE Physics: Combined Science

Topic Questions

GCSEPhysics: Combined ScienceAQATopic Questions7. Magnetism & Electromagnetism7.1 Permanent & Induced Magnetism, Magnetic Forces & Fields

7.1 Permanent & Induced Magnetism, Magnetic Forces & Fields

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Medium
1a3 marks

Two magnets are placed next to each other.

They attract one another.

One south pole is labelled as S in Figure 1. The others, X, Y and Z are unknown.

Figure 1

7-1-e-1a-magnets-attract-xyz

State the poles of X, Y and Z in Figure 1. 

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1b2 marks

Which are magnetic elements?

Tick (✓) two boxes.

   

Steel square
Cobalt square
Carbon square
Copper square
Brass square
Nickel square

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1c1 mark

One of the magnets is used to pick up two nails. 

The iron nails which were unmagnetised are now magnetised.

Complete the sentence.

Choose an answer from the box. 

forced induced permanent

 

     

The iron nails have become .............................. magnets.

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2a3 marks

Some students plot the magnetic field lines around a bar magnet. They have the apparatus shown in Figure 1 and a large sheet of paper.

Figure 1

7-1-e-2a-magnet-compass-pencil

Describe how the students use the apparatus in Fig. 9.1 to show the pattern of the magnetic field lines around the bar magnet.

 

You may draw a diagram to assist with your description.

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2b3 marks

Draw at least four lines above and below the bar magnet in Figure 2 to show the magnetic field around the bar magnet. Draw an arrow on the field lines to show the direction of the magnetic field.

Figure 2
screenshot-2023-03-13-at-13-17-48

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2c2 marks

Each of the three metal bars in Figure 3 is either a bar magnet or a piece of unmagnetised iron.

The forces that act between the bars when different ends are placed close together are shown by the arrows.

Figure 3

7-1-e-2c-bar-magnets123

State which one of the metal bars is a piece of iron.

Explain your answer.

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3a4 marks

Describe a method for drawing the magnetic field around a bar magnet using iron filings.

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3b1 mark

Define the term magnetic field.

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3c1 mark

State the direction of magnetic field lines.

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3d3 marks

Sketch the magnetic field lines for the two bar magnets shown in Figure 1.

Figure 1
 
4-1-3d-e-bar-magnets-1

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1a2 marks

State the law regarding the forces between the poles of two magnets.

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1b1 mark

Figure 1 below shows a magnet held close to the second magnet which is suspended by a light cotton thread.

Figure 1
fig-1-7-1-medium-aqa-gcse-physics

State the type of pole found at X?

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1c2 marks

The suspended magnet is replaced by a different unmagnetised material, as shown in Figure 2 below.

Figure 2
fig-2-q1c-7-1-medium-aqa-gcse-physics

Suggest two possible materials that the unmagnetised material could be made from.

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1d3 marks

The unmagnetised material is attracted to the magnet by a process known as magnetic induction.

Explain what is meant by magnetic induction and why the unmagnetised material is attracted to the magnet.

You may draw a diagram to help with your answer.

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23 marks

A student is presented with three unlabelled materials.

One of the materials is a magnetic and magnetised, one is magnetic but not magnetised and the final one is non-magnetic.

The student is also provided with a bar magnet.

q2-7-4-medium-aqa-gcse-physics

Describe how the student could use the magnet to determine which material is which.

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3a2 marks

Explain what is meant by the term magnetic field.

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3b3 marks

Describe how a plotting compass may be used to plot the magnetic field of a bar magnet.

You may draw a diagram if you wish.

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3c3 marks

Complete the diagram below to show the magnetic field of the bar magnet, indicating its direction.

q2c-7-4-medium-aqa-gcse-physics

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3d1 mark

What feature of your diagram represents the strength of the magnetic field?

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44 marks

A bar magnet is carefully balanced from a thin piece of cotton thread, far away from any magnetic materials.

q4-7-1-medium-aqa-gcse-physics

The magnet is left to settle. After a short while the following observations are made:

  1. The magnet has turned to align itself roughly north to south.
  2. The north pole of the magnet is roughly facing north.
  3. The pole does not quite point to the north but slightly to one side of north.
  4. The north pole also points downwards at an angle.

Explain what can be concluded from each of the above points.

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