Electro Magnetic Induction And Alternating Currents Question 268

Question: In a transformer, number of turns in the primary are 140 and that in the secondary are 280. If current in primary is 4A then that in the secondary is [AIEEE 2002]

Options:

A) 4 A

B) 2 A

C) 6 A

D) 10 A

Show Answer

Answer:

Correct Answer: B

Solution:

$ \frac{V_{p}}{V_{s}}=\frac{i_{s}}{i_{p}}\Rightarrow i_{s}=4\times \frac{140}{280}=2A $



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