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Explain the arrangement and orientation of the magnetic field created by currents flowing through straight wires and solenoids.

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Cambridge IGCSE PhysicsElectricity and magnetismCore content

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Explain the arrangement and orientation of the magnetic field created by currents flowing through straight wires and solenoids

  • This point belongs to Magnetic effect of a current, especially Magnetic effect of a current outcomes.
  • You need to be able to explain the arrangement and orientation of the magnetic field created by currents flowing through straight wires and solenoids.
  • The key ideas to know are Describe and Identify.
  • Use the linked flashcards and practice questions to check recall, then practise applying the idea in an exam-style answer.

Key concepts

DescribeIdentify

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Paper 3 structured question: Magnetic effect of a current

Paper 3Theory (Core)1 marks

Description

Magnetic Field Around a Wire

A straight wire carries an electric current. The magnetic field around the wire can be visualized using iron filings or a magnetic compass.

  1. a

    State the direction of the magnetic field around the wire when the current flows from positive to negative.

    Aim for approximately 1 distinct marking point.

    [1]
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