Physics for IGCSE & O level - Magnets And Currents (Section 4 - No. 5)
How does a transformer work on the principle of mutual induction?
A changing current in the primary coil induces a current in the secondary coil.
A static magnetic field induces a voltage.
The primary coil produces a magnetic field.
The secondary coil provides the initial energy.
Explanation
A changing current in the primary coil creates a changing magnetic field, which induces a voltage and current in the secondary coil (mutual induction).
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