What is the principle behind the operation of a transformer?
Correct Answer: Transformers operate on the principle of electromagnetic induction.
- Step 1: Understand that a transformer is a device used to change the voltage of electricity.
- Step 2: Learn that transformers have two coils of wire: the primary coil and the secondary coil.
- Step 3: Know that when electricity flows through the primary coil, it creates a magnetic field around it.
- Step 4: Realize that if the current in the primary coil changes, the magnetic field also changes.
- Step 5: Understand that this changing magnetic field passes through the secondary coil.
- Step 6: Learn that the changing magnetic field in the secondary coil induces an electromotive force (EMF), which creates electricity in that coil.
- Step 7: Know that the amount of voltage produced in the secondary coil depends on the number of turns of wire in each coil.
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