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A student uses a digital magnetometer sensor connected to a tablet to measure the local magnetic field in a physics laboratory.

Figure 1 shows the sensor's reading on the tablet before a strong magnet is placed on the workbench nearby.

Figure 2 shows the reading after the magnet is placed on the workbench.

Figure 1: Tablet screen displaying the digital magnetometer app before the magnet is placed. It shows a digital reading of 'Field Strength: 42.5 μT' and a circular compass dial with a needle pointing to 12°.

Figure 2: Tablet screen displaying the digital magnetometer app after the magnet is placed nearby. It shows a digital reading of 'Field Strength: 115.2 μT' and a circular compass dial with a needle pointing to 78°.

State two changes in the measured magnetic field shown by the sensor from Figure 1 to Figure 2.

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Magnets and magnetic fields Questions

Practise Edexcel GCSE Physics Magnets and magnetic fields with exam-style questions for Foundation and Higher tier. 100 questions, matched to the Edexcel GCSE Physics (1PH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.