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 __________________.

p-type semiconductor

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n-type semiconductor

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an intrinsic semiconductor

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p-n junction

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Solution

The correct option is D p-n junction
The device is a p-n junction diode because the current flows when it is forward biased but current drops down to almost zero when it is in reverse bias orientation.

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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 __________________.

The correct option is D p-n junctionThe device is a p-n junction diode because the current flows when it is forward biased but current drops down to almost zero when it is in reverse bias orientation.

The correct option is D p-n junction
The device is a p-n junction diode because the current flows when it is forward biased but current drops down to almost zero when it is in reverse bias orientation.