Induced Potential Difference
Physics: AQA GCSE Higher, topic 7.2.12
Induced Potential
A potential difference can be induced across the ends of an electrical conductor in two ways.
Conductor moving in a magnetic field
- A potential difference is induced if a conductor moves relative to a magnetic field.
Change in magnetic field
- A potential difference is induced if there is a change in the magnetic field around a conductor.
Adding more coils
- Increasing the number of turns of coils of wire induces a bigger potential difference in an electrical conductor (coil of wire) during electromagnetic induction.
Increasing the speed of movement
- Making the magnetic field change more rapidly by moving the wire or the magnet more quickly induces a bigger potential difference in an electrical conductor (coil of wire) during electromagnetic induction.
Test yourself on Induced Potential Difference
Why does moving the wire or magnet more quickly induce a bigger potential difference?