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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 - Physics

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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

MCQ
रिक्त स्थान भरें
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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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p-n Junction
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 19: Electric Current through Gases - MCQ [पृष्ठ ३५२]

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एचसी वर्मा Concepts of Physics Vol. 2 [English] Class 11 and 12
अध्याय 19 Electric Current through Gases
MCQ | Q 6 | पृष्ठ ३५२

संबंधित प्रश्न

In an unbiased p-n junction, holes diffuse from the p-region to n-region because ______.


In a p-n junction diode, the current I can be expressed as

I = `"I"_0 exp ("eV"/(2"k"_"BT") - 1)`

where I0 is called the reverse saturation current, V is the voltage across the diode and is positive for forward bias and negative for reverse bias, and I is the current through the diode, kBis the Boltzmann constant (8.6×10−5 eV/K) and T is the absolute temperature. If for a given diode I0 = 5 × 10−12 A and T = 300 K, then

(a) What will be the forward current at a forward voltage of 0.6 V?

(b) What will be the increase in the current if the voltage across the diode is increased to 0.7 V?

(c) What is the dynamic resistance?

(d) What will be the current if reverse bias voltage changes from 1 V to 2 V?


Explain, with the help of a circuit diagram, the working of a photo-diode. Write briefly how it is used to detect the optical signals.


Explain, with the help of a circuit diagram, the working of n-p-n transistor as a common emitter amplifier.


If the two ends of a p-n junction are joined by a wire,


The drift current in a p-n junction is


The diffusion current in a p-n junction is


Two identical p-n junction may be connected in series with a battery in three ways. The potential difference across the two p-n junctions are equal in


A hole diffuses from the p-side to the n-side in a p-n junction. This means that


The potential barrier existing across an unbiased p-n junction is 0.2 volt. What minimum kinetic energy a hole should have to diffuse from the p-side to the n-side if (a) the junction is unbiased, (b) the junction is forward-biased at 0.1 volt and (c) the junction is reverse-biased at 0.1 volt?  


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.


Consider a p-n junction diode having the characteristic \[i -  i_0 ( e^{eV/kT}  - 1) \text{ where }  i_0  = 20\mu A\] . The diode is operated at T = 300 K . (a) Find the current through the diode when a voltage of 300 mV is applied across it in forward bias. (b) At what voltage does the current double?


A load resistor of 2kΩ is connected in the collector branch of an amplifier circuit using a transistor in common-emitter mode. The current gain β = 50. The input resistance of the transistor is 0.50 kΩ. If the input current is changed by 50µA. (a) by what amount does the output voltage change, (b) by what amount does the input voltage change and (c) what is the power gain?


The depletion layer in the p-n junction diode is caused by ______.


In a semiconductor diode, the barrier potential offers opposition to only ______.


Zener breakdown occurs in a p-n junction having p and n both:


The formation of the depletion region in a p-n junction diode is due to ______.


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