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In a transistor the current amplificatio...

In a transistor the current amplification `alpha` is '0.9', when connected in common base configuration. Now if the same transistor is connected in common emitter configurations and the change in ouput current is 4.5 mA, then the corresponding charnge in the input current is

A

2mA

B

0.5 mA

C

3mA

D

0.25mA

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The correct Answer is:
B
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AAKASH INSTITUTE ENGLISH-SEMICONDUCTOR ELECTRONICS: MATERIALS, DEVICES AND SIMPLE CIRCUITS-Assignment (Section -B (Objective type question (one option is correct))
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  2. In a common emitter amplifier , when a signal of 40 mV is added to the...

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  3. The output of the given logica gate is

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  4. Two identical capacitors A and B are charged to the same potential V a...

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  5. The relationship between alpha and beta is given by

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  6. Two identical p-n junctions may be connected in series in which a batt...

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  7. In a silicon transistor, a change of 7.89 mA in the emitter current pr...

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  8. In a doped semiconductor, the impurity level is 40 meV above the valen...

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  9. In figure the input is across the terminals A and C and the output is ...

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  10. In the given figure, a transistor is connected in common emitter confi...

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  11. A transistor is used in Common-emitter mode in an amplifier circuits. ...

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  12. In the given circuit, calculate the ratio of currents through the batt...

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  13. In a transistor the current amplification alpha is '0.9', when connect...

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  14. A transistor is connected in common base configuration, the collector ...

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  15. In the given circuit , the voltage across the base emitter junction is

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  16. If the current amplification factor for a transistor connected in comm...

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  17. In doped semiconductor one dopent atom is kept typically for how many ...

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  18. In a p-n junction diode the value of drift current through depletion r...

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  19. In the Boolean algebra bar(A).bar(B) equals

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  20. In the adder circuits of two inputs

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