PH-1601
Electromagnetic induction
Physics · Secondary 4 · Easy · Electromagnetic induction
A permanent magnet is moved in and out of a coil, inducing an e.m.f. in the coil. Which single change will decrease the maximum induced e.m.f.?
- Move the magnet more slowly through the coil.
- Use a magnet with a stronger magnetic field.
- Increase the number of turns on the coil.
- Push the magnet in and out more quickly.
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