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Semiconductor Electronic: Material, Devices And Simple Circuits — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsSemiconductor Electronic: Material, Devices And Simple Circuits1 Mark
MCQ
A semiconductor device is connected in a series circuit with a battery and resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops almost to zero. The device may be:
  • A
    A $p-$type semiconductor
  • B
    An $n-$type semiconductor
  • ✓
    A $p-n$ junction
  • D
    An intrinsic semiconductor
✓

Answer

Correct option: C.
A $p-n$ junction

An ideal diode acts like an open switch when rivers biased and like a closed switch when forward biased.

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