7.2.12

Forces Between Electricity and Magnets

Test yourself

Forces Between Electricity and Magnets

When a potential difference (p.d) is induced in a wire, it creates a force acting in the opposite direction to the action that induced the p.d. This is due to the motor effect.

Illustrative background for Moving downwardsIllustrative background for Moving downwards ?? "content

Moving downwards

  • If a wire moves downwards into a horseshoe magnet:
    • A p.d is induced in the wire and an electric current flows through the wire.
    • A force will push the wire upwards, opposing the downwards movement of the wire that induced the p.d.
Illustrative background for Moving upwardsIllustrative background for Moving upwards ?? "content

Moving upwards

  • If the wire was moving upwards to create the p.d, then the force on the wire due to the induced p.d would push it downwards.

Jump to other topics

1Energy

2Electricity

3Particle Model of Matter

4Atoms & Radiation

5Forces

5.1Basics of Motion

5.2Forces

5.3Effects of Forces

5.4Pressure

6Waves

7Magnetism

8Astrophysics

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