A) 30 volts
B) 90 volts
C) 120 volts
D) 220 volts
Correct Answer: C
Solution :
[c] Induced emf in primary coil \[{{E}_{p}}=\frac{d\phi }{dt}=\frac{d}{dt}\,\left( {{\phi }_{0}}+4t \right)=4\,volt\] Induced emf in secondary coil \[\frac{{{E}_{S}}}{{{E}_{P}}}=\frac{{{N}_{S}}}{{{N}_{P}}}\Rightarrow \,\,\,\,\frac{{{E}_{S}}}{4}=\frac{1500}{50}\Rightarrow {{E}_{S}}=120\,\,volt\]You need to login to perform this action.
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