Electro Magnetic Induction And Alternating Currents Question 261
Question: In a transformer, the number of turns in primary coil and secondary coil are 5 and 4 respectively. If 240 V is applied on the primary coil, then the ratio of current in primary and secondary coil is [AFMC 1998; CPMT 2000; Pb. PET 2002]
Options:
A) 4 : 5
B) 5 : 4
C) 5 : 9
D) 9 : 5
Show Answer
Answer:
Correct Answer: A
Solution:
$ \frac{N_{s}}{N_{p}}=\frac{i_{p}}{i_{s}}\Rightarrow \frac{i_{p}}{i_{s}}=\frac{4}{5} $
