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7.1 Permanent and induced magnetism, magnetic forces and fields

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Question 11

A technician tests a permanent bar magnet. The left-hand end is labelled X and the right-hand end is labelled Y. A sensor records magnetic field strength in millitesla (mT) and the direction of the field along the line through the magnet.

PositionLocationMagnetic field strength in mTField direction
A2.0 cm to the left of X6.4left
B5.0 cm to the left of X1.1left
C2.0 cm to the right of Y6.2left

A student makes the following conclusions:

  • X is the north pole.
  • The results show that the magnetic field becomes weaker as distance from the magnet increases.
  • At point D, 8.0 cm to the right of Y, the magnetic field will point right and its strength will be greater than 6.2 mT.

Evaluate the student's conclusions. Use the data in the table and your knowledge of magnetic fields.

[4]
Markscheme

7.1 Permanent and induced magnetism, magnetic forces and fields Questions

  1. GCSE
  2. /Physics
  3. /7.1 Permanent and induced magnetism, magnetic forces and fields

80 exam-style questions on AQA GCSE Physics 7.1 Permanent and induced magnetism, magnetic forces and fields, covering 7.1.1 Poles of a magnet and 7.1.2 Magnetic fields. Each one has a worked solution and a mark scheme showing where the marks go.

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