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A transistor is used in a common-emitter...

A transistor is used in a common-emitter mode in an amplifier circuit. When a single of `20 mV` is added to the base-emitter voltage, the base current change by `20 muA` and the collector current changes by `2mA`. The load resistor in `5kOmega`. What is the volume of `beta`?

A

`10`

B

`100`

C

`1000`

D

`10^(6)`

Text Solution

Verified by Experts

The correct Answer is:
B
`beta=(DeltaI_(c))/(DeltaI_(b))=(2mA)/(20 mu A)=(2xx10^(-3))/(20xx10^(-6))=100`
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