JEE PHYSICS UNIT 19
QUIZ NO 4
TOTAL QUESTIONS = 20


1. In a forward-biased diode, the current increases due to


2. The function of a base in a transistor is to


3. The Zener diode is heavily doped to


4. The width of the depletion region in a P-N junction is largest under


5. In a P-N junction diode, the current conduction is due to


6. A P-N junction diode in forward bias acts like


7. In a common-emitter transistor configuration, the output is taken across


8. The breakdown in Zener diodes occurs due to


9. Which of the following is a major application of a photodiode?


10. The energy gap for a semiconductor material is typically


11. The total current in a transistor is the sum of


12. What is the function of a resistor in a diode circuit?


13. In a Zener diode, the breakdown voltage depends on


14. In an LED, the light is emitted when


15. The operation of a transistor is based on


16. In a P-N junction, the electric field is formed due to


17. Which of the following is an ideal use of a diode in an electronic circuit?


18. The current gain of a transistor is given by


19. Which material is used to make a diode?


20. The purpose of a photodiode is to



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