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Figure shows a circuit in which three identical diodes are used. Each diode has forward resistance of 20 and infinite backward resistance. Resistors R ₁= R ₂= R ₃=50 . Battery voltage is 6 ~V . The current through R ₃ is :

Options

  1. A50 ~mA
  2. B100 ~mA
  3. C60 ~mA
  4. D25 ~mA

Correct answer

A. 50 ~mA

Step-by-step solution

Here, diodes D₁ and D₂ are forward biased and D ₃ is reverse biased. Therefore current through R ₃ i = V R ^ = 6 120 = 1 20 ~A =50 ~mA

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