Electro Magnetic Induction And Alternating Currents Question 252
Question: In a lossless transformer an alternating current of 2 amp is flowing in the primary coil. The number of turns in the primary and secondary coils are 100 and 20 respectively. The value of the current in the secondary coil is [MP PMT 1994]
Options:
A) 0.08 A
B) 0.4 A
C) 5 A
D) 10 A
Show Answer
Answer:
Correct Answer: D
Solution:
$ \frac{N_{s}}{N_{p}}=\frac{i_{p}}{i_{s}} $
Þ $ i_{s}=i_{p}\times \frac{N_{p}}{N_{s}}=2\times \frac{100}{20}=10\ A $
