$A$ semiconductor device is connected in a series circuit with a battery and a 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
  • C
    $A$ $PN-$junction
  • D
    An intrinsic semiconductor

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