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4.1 Magnets and magnetic fields

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Question 16
F

A student makes four electromagnets from the same type of wire.

Which electromagnet produces the strongest magnetic field?

[1]
A

100100100 turns, current of 1.0 A1.0\ \text{A}1.0 A, iron core

B

100100100 turns, current of 2.0 A2.0\ \text{A}2.0 A, copper core

C

505050 turns, current of 2.0 A2.0\ \text{A}2.0 A, iron core

D

100100100 turns, current of 2.0 A2.0\ \text{A}2.0 A, iron core

Markscheme

4.1 Magnets and magnetic fields Questions

  1. GCSE
  2. /Physics
  3. /4.1 Magnets and magnetic fields

44 exam-style questions on OCR GCSE Physics 4.1 Magnets and magnetic fields, covering 4.1.1 Magnetic poles, attraction and repulsion, 4.1.2 Permanent and induced magnets, 4.1.3 The magnetic field of a magnet, 4.1.4 Compasses and the Earth's magnetic field, 4.1.5 The magnetic field around a current-carrying wire, 4.1.6 Field strength, current and distance, and 4.1.7 Solenoids and electromagnets. Each one has a worked solution and a mark scheme showing where the marks go.

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