4.11.3

Forces Between Electricity & Magnets

Test yourself

Forces Between Electricity and Magnets

When an e.m.f is induced in a wire, it creates a force acting in the opposite direction to the action that induced the e.m.f. This is due the motor effect (covered later).

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

Moving downwards

  • If a wire moves downwards into a horseshoe magnet:
    • An e.m.f 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 e.m.f.
Illustrative background for Moving upwardsIllustrative background for Moving upwards ?? "content

Moving upwards

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

Jump to other topics

1Motion, Forces & Energy

1.1Physical Quantities & Measurement Techniques

1.2Motion

1.3Mass & Weight

1.4Density

1.5Forces: Effects of Forces

1.6Forces: Turning Effects of Forces

1.7Forces: Centre of Gravity

1.8Momentum

1.9Energy, Work, & Power: Energy

1.10Energy, Work & Power: Work

1.11Energy, Work & Power: Energy Resources

1.12Energy, Work & Power: Power

1.13Pressure

2Thermal Physics

3Waves

4Electricity & Magnetism

4.1Simple Phenomena of Magnetism

4.2Electrical Quantities: Electric Charge

4.3Electrical Quantities: Electric Current

4.4Electromotive Force & Potential Difference

4.5Electrical Quantities: Resistance

4.6Electrical Energy & Electrical Power

4.7Electric Circuits: Circuit Diagrams & Components

4.8Electric Circuits: Series & Parallel Circuits

4.9Electric Circuits: Action & Use

4.10Electrical Safety

4.11Electromagnetic Effects: Electromagnetic Induction

4.12Electromagnetic Effects: The A.C. Generator

4.13Magnetic Effect of a Current

4.14Force on a Current-Carrying Conductor

4.15Electromagnetic Effects: The D.C. Motor

4.16Electromagnetic Effects: The Transformer

5Nuclear Physics

6Space Physics

Unlock your full potential with Seneca Premium

  • Unlimited access to 10,000+ open-ended exam questions

  • Mini-mock exams based on your study history

  • Unlock 800+ premium courses & e-books

Get started with Seneca Premium