Induction and Generators
IGCSE Edexcel Physics
6.15-6.16 Electromagnetic Induction
Key Concepts:
A changing magnetic field induces a voltage. Faster motion and stronger fields give larger voltages.
Section A: Induction
1. State two ways to induce a voltage in a coil.
[2]
2. Describe how a generator produces electricity.
[3]
3. State two factors that increase induced voltage.
[2]
Total marks: 7
Mark Scheme
1.
Move coil in field; change field through coil [2]
2.
Relative motion between coil and magnet induces voltage [3]
3.
Increase speed, number of turns, or field strength [2]