Electro Magnetic Induction And Alternating Currents Question 257
Question: A step-up transformer operates on a 230 V line and supplies a load of 2 ampere. The ratio of the primary and secondary windings is 1 : 25. The current in the primary is [CBSE PMT 1998]
Options:
A) 15 A
B) 50 A
C) 25 A
D) 12.5 A
Show Answer
Answer:
Correct Answer: B
Solution:
$ \frac{N_{s}}{N_{p}}=\frac{i_{p}}{i_{s}} $ or $ \frac{25}{1}=\frac{i_{p}}{2}\Rightarrow i_{p}=50A $
