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A semiconducting device is connected in a series circuit with a battery and a resistance. Current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops to zero. The device may be

Options

  1. Ap-type semiconductor
  2. Bn -type semiconductor
  3. Can intrinsic semiconductor
  4. Dp-n junction

Correct answer

D. p-n junction

Step-by-step solution

p-n junction is a diode, which allows to pass the current in only one direction.

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