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प्रश्न
A diode, a resistor and a 50 Hz AC source are connected in series. The number of current pulses per second through the resistor is __________ .
विकल्प
25
50
100
200
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उत्तर
50
The number of current pulses is equal to the frequency of the AC source because one current pulse passes through the diode for one oscillation of the AC source.
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संबंधित प्रश्न
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Explain briefly, with the help of a circuit diagram, how a p-n junction diode works as a half wave rectifier.
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The diffusion current in a p-n junction is
Diffusion current in a p-n junction is greater than the drift current in magnitude
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When a p-n junction is reverse-biased, the current becomes almost constant at 25 µA. When it is forward-biased at 200 mV, a current of 75 µA is obtained. Find the magnitude of diffusion current when the diode is
(a) unbiased,
(b) reverse-biased at 200 mV and
(c) forward-biased at 200 mV.
The drift current in a p-n junction is 20.0 µA. Estimate the number of electrons crossing a cross section per second in the depletion region.
Draw the current-voltage characteristics for the device show in figure between the terminals A and B.

(Assume that the resistance of each diode is zero in forward bias and is infinity in reverse bias.)
Choose the correct option.
Current through a reverse-biased p-n junction increases abruptly at:
Answer in detail.
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Diode and resistance are connected as shown in figure. Out of the following statements which one is TRUE?

What is the depletion region?
What is barrier potential?
Which process moves charge carriers from a higher concentration to a lower concentration?
What is drift?
Which charge carriers remain near the junction after the region loses mobile charge carriers?
Which semiconductor devices use the p-n junction principle?
