In a n-p-n transistor, the collector current is 10mA. If 90% of the electrons emitted reach the collector, then the emitter current will be

Question

Dr. Abubacker · Accepted Answer

(b) In an n-p-n transistor emitter current ($i_{e}$) is the sum of base current ($i_{b}$) and collector current ($i_{c}$).
[image:14_image250.emf]
Given, $\frac{90}{100}i_{e} = i_{c}$ …(i)
Also, $i_{c} = 10$ mA …(ii)
From Eqs. (i) and (ii), we get
$i_{e} = \frac{10 	imes 100}{90} = 11\ mA$

Q. In a n-p-n transistor, the collector current is 10mA. If 90% of the electrons emitted reach the collector, then the emitter current will be

Explanation

Reviewed by Dr. Abubacker

Want more practice?