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In an n-p-n circuit transistor, the coll...

In an n-p-n circuit transistor, the collector current is 10 mA. If 80% electrons emitted reach the collector, then

A

the emitter current will be 7.5 mA

B

the emitter current will be 12.5 mA

C

the base current will be 3.5 mA

D

the base current will be 1.5 mA

Text Solution

Verified by Experts

The correct Answer is:
B
Here, `I_C`=80% of `I_E=80/100I_E`
or `I_E=I_C/0.8=10/0.8=12.5 mA`
`I_B=I_E-IC=12.5-10=2.5 mA`
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