CUET · PHYSICS · PYQ PAPER 2025
On connecting a device X in a series circuit with a battery and a resistor, a current passes through the circuit. On reversing the polarity of the battery, the current in the circuit drops to almost zero. The device X may be a
- A p - type semiconductor
- B n - type semiconductor
- C p-n junction diode
- D capacitor
Answer & Solution
Correct Answer
(C) p-n junction diode
Step-by-step Solution
Detailed explanation
The device allows current in one direction and blocks it in the reverse direction. This behavior is characteristic of a p-n junction diode. Answer: p-n junction diode
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