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JEE Main 2002
Exam
JEE Main
Year
2002
Subject
Physics
Chapter
Alternating Current

JEE Main 2002 · Physics · Alternating Current

In a transformer, number of turns in the primary coil are 140 and...

In a transformer, number of turns in the primary coil are 140 and that in the secondary coil are 280. If current in primary coil is 4 A4 \mathrm{~A}, then that in the secondary coil is

Options

  1. A4 A
  2. B2 A
  3. C6 A
  4. D10 A

Correct answer

B. 2 A

Step-by-step solution

I1N1=I2N2⇒I2=4×140280=2 AI_1 N_1=I_2 N_2 \Rightarrow I_2=\frac{4 \times 140}{280}=2 \mathrm{~A}
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