Question
What is the principle behind the working of a
transformer?Solution
A transformer works on Faraday's law of induction. It uses electromagnetic induction to change the voltage in alternating current (AC) circuits. A varying current in the primary coil induces a varying magnetic field, which in turn induces a current in the secondary coil. This allows voltage to be increased or decreased.
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The mean proportional of 12 and 75 is _____.
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