IGCSE Physics- Dynamos and Transformers

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1. In a TRANSFORMER an alternating _______ is applied to the primary coil. This causes an alternating magnetic field to be set up in the core. Because the secondary coil is within the magnetic field it induces an alternating _______. What is the missing word

  • voltage
  • current
  • charge
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Other questions in this quiz

2. How do we find the direction of movement, magnetic field and current in a generator?

  • Use Fleming's RIGHT hand rule
  • Use Fleming's LEFT hand rule
  • Use the RIGHT hand grip

3. If a transformer is a STEP-UP transformer, the primary coil will have ____ turns than the secondary coil

  • the same amount
  • less
  • more

4. When a magnet is spun inside a coil in a DYNAMO a potential difference is produced between the two ends of the coil causing a _______ to flow

  • magnetic field
  • current
  • voltage

5. In a GENERATOR the brushes connect the spinning slip rings to

  • the external circuit
  • the coil
  • the magnetic field where the coil spins inside it


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