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when a semiconductor device is connected...

when a semiconductor device is connected in series with a battery and a resistance, a current is found to flow in the circuit . If , hiwever the polarity of the battery is reversed, practically no current flows in the circuit. The device may be

A

a p-type semicondutor

B

a n- type semiconducto

C

an intrinsic semiconductor

D

a p-n juntion

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