JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES

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In a transistor the collector current is always less than the emitter current because

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Correct option: B

A few electrons are lost in the base and only remaining ones reach the collector

Option B (A few electrons are lost in the base and only remaining ones reach the collector) is correct because some of the electrons injected from the emitter into the base recombine with holes in the base region before reaching the collector.

More Questions from SEMI CONDUCTOR DEVICES

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A PN-junction has a thickness of the order of In a

PNP

transistor the base is the

N

-region. Its width relative to the

P

-region is A solid reflects incident light and its electrical conductivity decreases with temperature. The binding in this solid is An alternating current can be converted into direct current by a A N–P–N transistor is used in inverse active mode of operation then its emitter base junction should be in In the case of constants

\mathrm{\alpha\; and\; \beta }

of a transistor