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A semiconducting device is connected in ...

A semiconducting 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 to almost zero.The device may be

A

a p-n junction

B

an intrinsic semiconductor

C

a p-type semiconductor

D

a n-type semiconductor

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The correct Answer is:
A
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