Transistor homework question

.1.1.1.1.1.1

 

What is the value for Alpha and VBE?

If Alpha = 1 then you can say that IE and IC are equal.

With that 25mA, you can find VC just by using KCL. It should be

10V-VC/270 = 25mA

VC = ......

From there you can use the other formula

VCE= VC - VE

If VBE = 0.7V....
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VB = 5V this is the base volatge it already have a +5V volatage source connected to it.

VBE = VB - VE

0.7 = 5V - VE

VE = 4.3V
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