2 (a) Figure 3 shows some objects and words describing these objects - Edexcel - GCSE Physics Combined Science - Question 2 - 2021 - Paper 1
Question 2
2 (a) Figure 3 shows some objects and words describing these objects.
Draw one line from each object to its description.
2 (b) Figure 4 shows a wire passing through... show full transcript
Worked Solution & Example Answer:2 (a) Figure 3 shows some objects and words describing these objects - Edexcel - GCSE Physics Combined Science - Question 2 - 2021 - Paper 1
Step 1
Draw one line from each object to its description
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Answer
Connect the nail in a current-carrying coil to the description 'non-magnetic'.
Link the plotting compass needle to 'permanent magnet'.
Associate the wooden ruler with 'temporary magnet'.
Step 2
Draw one magnetic field line on Figure 4
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Answer
Draw a circular magnetic field line around the wire to represent the magnetic field produced.
Step 3
Draw one arrow on the field line you have drawn
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Answer
Place an arrow on the magnetic field line indicating a clockwise direction.
Step 4
Use the graph in Figure 5 to calculate the change in strength of magnetic field
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Answer
The magnetic field strength at 4 cm is 6 mT and at 8 cm is 3 mT. Therefore, the change in strength of the magnetic field is:
extChange=6extmT−3extmT=3extmT
Step 5
State one other factor that affects the strength of the magnetic field
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Answer
The strength of the electric current flowing through the wire is one factor that affects the strength of the magnetic field.