NEET 2007 Physics question
The primary and secondary coils of a transformer have 50 and 1500 turns respectively. If the magnetic flux linked with the primary coil is given by , where is in webers, is time in seconds and is a constant, the output voltage across the secondary coil is
Answer: (3)
Solution
The emf induced in the primary coil is V (the flux changes at a constant rate of 4 Wb/s). In an ideal transformer the same flux links both coils, so $ =
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