Physics - Semiconductors Question with Solution | TestHub
A semiconductor device is connected in series with a battery and a resistor. The current of 10 mA is found to pass through the circuit. If the terminals of X are connected in reverse manner, the current drops to almost zero. may be
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Answer:
Solution:
The device allows a significant current of to flow when connected in one direction, indicating it is in forward bias.
When the terminals are reversed, the current drops to almost zero, indicating it offers very high resistance in the reverse direction (reverse bias).
This unidirectional conduction property is the characteristic of a p-n junction diode.
Intrinsic and extrinsic semiconductors conduct current equally in both directions, acting like simple resistors.
A Zener diode can also conduct in reverse bias if the applied voltage exceeds its breakdown voltage, but a standard p-n junction diode is specifically designed to block current in reverse bias.
Answer: a p-n junction diode
