Physics-
General
Easy
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 weber, 
is time in second and 
is a constant, the output voltage across the secondary coil is
- 90 V
- 120 V
- 220 V
- 30V
The correct answer is: 120 V
The magnetic flux linked with the primary coil is given by
So, voltage across primary
Also, we have
From relation,
Or 
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