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 $



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