Methods:
- Move a conductor through a magnetic field
- Move a magnet into/out of a coil
- Change the magnetic field through a coil
Key requirement: The magnetic field through the conductor must be CHANGING. No change = no induced voltage.
To increase induced voltage:
- Move the magnet/conductor faster
- Use a stronger magnet
- Use more turns on the coil
To reverse the direction of induced current:
- Move in the opposite direction
- Reverse the magnetic field (flip the magnet)
This key facts covers How to Induce a Voltage within Electromagnetic Induction for GCSE Physics. Revise Electromagnetic Induction in Magnetism for GCSE Physics with 18 exam-style questions and 12 flashcards. This is a high-frequency topic, so it is worth revising until the explanation feels precise and repeatable. It is section 2 of 9 in this topic. Use this key facts to connect the idea to the wider topic before moving on to questions and flashcards.
Practice questions for Electromagnetic Induction
What is electromagnetic induction?
Explain how a potential difference (voltage) is induced in a conductor in a magnetic field.