Q80 / 90 · JEE Main 2019 (09 Jan Shift 2) · Physics

Ge and Si diodes start conducting at 0.3 V and 0.7 V respectively. In the following figure if Ge diode connection are reversed, the value of V0 changes by: (assume that the Ge diode has large breakdown voltage)

Figure

  • A
    0.8 V
  • Correct answer
    B
    0.4 V
  • C
    0.2 V
  • D
    0.6 V

Solution

In first case, V0=12-0.3V=11.7 V

In second case, V0=12-0.7V=11.3 V

∆V0=0.4 V

Hence, the correct answer is option: 'B'.

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