Question

The collector current in a common-emitter transistor amplifier is 4 mA. When the base current is increased by 20 µA, the collector current increases to 6 mA. The current gain is ______.

विकल्प

• 100

• 200

• 300

• 1000

Answer 1

The collector current in a common-emitter transistor amplifier is 4 mA. When the base current is increased by 20 µA, the collector current increases to 6 mA. The current gain is 100.

Explanation:

CE current gain, `β_(dc) = (ΔI_C)/(ΔI_B)`

= `((6 - 4) xx 10^-3)/(20 xx 10^-6)`

= `2000/20`

= 100