Question

Calculate the transistor’s Emitter current if it is driven by a small Base current of 7mA with a Collector current of 10mA​

Answer 1

Answer:

Given β=20,i

E

=7mA

i. β=

i

B

i

C

=

i

B

i

E

−i

B

or β

iβ

=i

E

−i

B

⇒i

B

=

β+1

i

E

=

20+1

7mA

=

21

7

mA=

3

1

mA

ii. i

C

=i

E

−i

B

=7−

3

1

=

3

20

mA