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प्रश्न
During the formation of a p-n junction ______.
विकल्प
diffusion current keeps increasing.
drift current remains constant.
both the diffusion current and drift current remain constant.
diffusion current remains almost constant but the drift current increases till both currents become equal.
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उत्तर
During the formation of a p-n junction diffusion current remains almost constant but the drift current increases till both currents become equal.
संबंधित प्रश्न
In an unbiased p-n junction, holes diffuse from the p-region to n-region because ______.
A zener diode is fabricated by heavily doping both p- and n- sides of the junction. Explain, why?
When a p-type impurity is doped in a semiconductor, a large number of holes are created, This does not make the semiconductor charged. But when holes diffuse from the p-side to the n-side in a p-n junction, the n-side gets positively charged. Explain.
A hole diffuses from the p-side to the n-side in a p-n junction. This means that
A semiconducting device is connected in a series circuit with a battery and a resistance. A current is found to pass through the circuit. If the polarity of the battery is reversed, the current drops to almost zero. the device may be
(a) an intrinsic semiconductor
(b) a p-type semiconductor
(c) an n-type semiconductor
(d) a p-n junction
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.
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 __________ .
Choose the correct option.
Current through a reverse-biased p-n junction increases abruptly at:
The depletion layer in the p-n junction diode is caused by ______.
