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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 ~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

I₁ N₁=I₂ N₂ I₂= 4 140 280 =2 ~A

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