1.

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 beA. A `P`-type semiconductorB. An `N` -type semiconductorC. A `P-N` juctionD. An intrinsic semiconductor

Answer» Correct Answer - C
When polarity of the battery is reversed, the `P-N` junction becomes reverse biased so no current flows.


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