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JEE Main20199 Jan 2019Evening ShiftPhysicsSemiconductorsActual

G e and S i diodes start conducting at 0.3 V and 0.7 V respectively. In the following figure if G e diode connection are reversed, the value of V 0 changes by: (assume that the Ge diode has large breakdown voltage)

Options

  1. A0.8 V
  2. B0.4 V
  3. C0.2 V
  4. D0.6 V

Correct answer

B. 0.4 V

Step-by-step solution

In first case, V 0 = 12 - 0.3 V = 11.7 V In second case, V 0 = 12 - 0.7 V = 11.3 V ∆ V 0 = 0.4 V

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