Physics for IGCSE & O level - Magnets And Currents (Section 2 - No. 35)
How does the current in the primary coil relate to the current in the secondary coil of a transformer?
The currents are equal.
The ratio of the currents is inversely proportional to the turns ratio.
The currents are independent.
The current in the primary is always greater.
Explanation
The current ratio in a transformer is inversely proportional to the turns ratio.
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