CBSE Class 12-science Answered
in a common emitter mode of transistor the DC current gain is 20 diameter current is 7 milliampere calculate 1)base current and 2) collecter current
Asked by vk335548 | 25 Feb, 2019, 03:46: AM
Expert Answer
diameter is not related to common-mode emitter configuration of transistor.
I guess that " emitter current " is printed as " diameter current " by mistake.
DC current gain β = 20
We have IE = IC + IB , where IE , IC and IB are emitter, collector and base current respectively
IC = 20×IB
Hence IE = 21×IB or IB = IE /21 = 7/21 = 0.3 mA
IC = 0.3×20 = 6 mA
Answered by Thiyagarajan K | 25 Feb, 2019, 09:11: AM
