Simple alternating current circuits

Explanation of question 8

Two 5mH inductors of negligible resistance are connected in series across a 1kHz supply. The total reactance of the circuit will be approximately

  1. 126
  2. 63
  3. 31
  4. 16

The answer is :- 2 Total inductance = 5 + 5 = 10mH.  XL = 2 x PI x F x L = 2 x 3.14 x 1000 x 0.01 = approximately 63

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