Electro Magnetic Induction And Alternating Currents Question 274

Question: The output voltage of a transformer connected to 220 volt line is 1100 volt at 1 amp current. Its efficiency is 100%. The current coming from the line is [Pb. PET 2003]

Options:

A) 20 A

B) 10 A

C) 11 A

D) 22 A

Show Answer

Answer:

Correct Answer: B

Solution:

For 100% efficiency $ V_{s}i_{s}=V_{p}i_{p} $
$ \Rightarrow 1100\times 2=220\times i_{p}\Rightarrow i_{p}=10A $



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