JEE PHYSICS MCQ: SEMI CONDUCTOR DEVICES

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In a transistor circuit when the base current is increased by 50 micro amperes keeping the collector voltage fixed at 2 volts, the collector current increases by 1 mA. The current gain of transistor is

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Correct option: A

Option A (20) is correct because the current gain is the ratio of change in collector current to the change in base current.

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