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  • In an transistor the collector current is <img alt="\mathrm{24mA}" src="https://entrancecorne

In an \mathrm{ NPN} transistor the collector current is \mathrm{24mA}. If  \mathrm{80%} of electrons reach collector its base current in \mathrm{mA} is
 

Option: 1

36


Option: 2

26


Option: 3

16


Option: 4

6


Answers (1)

best_answer

Given \mathrm{i_c=\frac{80}{100} \times i_e \Rightarrow 24=\frac{80}{100} \times i_e \Rightarrow i_e=30 \mathrm{~mA}}

By using \mathrm{i_e=i_b+i_c \Rightarrow i_b=30-24=6 \mathrm{~mA}}

Hence option 4 is correct.

Posted by

Rishabh

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