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The collector supply voltage is 6 V and ...

The collector supply voltage is 6 V and the voltage drop across a resistor of 600 `Omega` in the collector circuit is 0.6 V, in a circuit of a transistor connected in common emitter mode. What is the base current if the current gain is 20?

A

0.25 mA

B

0.05 mA

C

0. 12 mA

D

0.02 mA

Text Solution

Verified by Experts

The correct Answer is:
B
Collector current,
`I_C="Collector voltage "/"Resistance"=0.6/600=10^(-3) A = 1 mA` and `because beta=I_C/I_B`=20
`therefore I_B=I_C/beta=(1 mA)/20 `=0.05 mA
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