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Avalanche breakdown in zener diode is ______

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Avalanche breakdown in zener diode is ______

(a) electric current multiplication takes place

(b) phenomenon of voltage multiplication takes place

(c) electrons are decelerated for a period of time

(d) sudden rise in voltage takes place.

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I would like to ask this question from Breakdown Diodes in division Semiconductor-Diode Characteristics of Electronic Devices & Circuits

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The correct choice is (a) electric current multiplication takes place

The explanation is: The carriers in transition region are accelerated by electric field to energies. That energies are sufficient to create electron current multiplication. A single carrier that is energized will collide with another by gaining energy. Thus an avalanche multiplication takes place.

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