A transistor is working in common emitter mode. Its amplification factor is 80. If the base current is 250 µA, what is the current at the collector?
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(a) 250 µA (b) 250 […]
A light emitting diode(LED) has a voltage drop of 2 volt across it and passes a current of 10 mA when it operates with a 6 volt battery through a limiting resistor R. The value […]
A transistor is operated in common emitter configuration at constant collector voltage Vc = 1.5 V such that a change in the base current from 100 µA to 150 µA produces a change in the […]
When npn transistor is used as an amplifier
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(a) electrons move from base to collector (b) holes move from emitter to base (c) electrons move from collector to base (d) holes move from […]
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