Electro Magnetic Induction And Alternating Currents Question 267
Question: In a step-up transformer the voltage in the primary is 220 V and the current is 5A. The secondary voltage is found to be 22000V. The current in the secondary (neglect losses) is [Kerala PMT 2002]
Options:
A) 5 A
B) 50 A
C) 500 A
D) 0.05 A
Show Answer
Answer:
Correct Answer: D
Solution:
$ \frac{V_{p}}{V_{s}}=\frac{i_{s}}{i_{p}}\Rightarrow \frac{220}{22000}=\frac{i_{s}}{5}\Rightarrow i_{s}=0.05\ amp $
