IGCSEPhysics: Co-ordinated Sciences (Double Award)CIERevision Notes4. Electricity & MagnetismElectrical QuantitiesElectromotive force

Electromotive force (CIE IGCSE Physics: Co-ordinated Sciences (Double Award))

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Electromotive force

Extended tier only

  • Electromotive force (e.m.f.) is the name given to the potential difference of the power source in a circuit
  • It is defined as

The electrical work done by a source in moving a unit charge around a complete circuit

  • Electromotive force (e.m.f.) is measured in volts (V)

Electromotive force, IGCSE & GCSE Physics revision notes

The e.m.f. is the voltage supplied by a power supply: 12 V in the above case

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    Katie M

    Author: Katie M

    Expertise: Physics

    Katie has always been passionate about the sciences, and completed a degree in Astrophysics at Sheffield University. She decided that she wanted to inspire other young people, so moved to Bristol to complete a PGCE in Secondary Science. She particularly loves creating fun and absorbing materials to help students achieve their exam potential.