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 $
