SemiconductorMedium
Question
If collector current is 120 mA and base current is 2mA and resistance gain is 3, what is power gain?
Options
A.180
B.10800
C.1.8
D.18
Solution
⇒ Ie = 120Am, Ib = 2mA ⇒ Ie = Ib + Ic
(emitter current)
⇒ Ie = 120 + 2 = 122mA
Resistance gain = 3
d.c.power gain
= (current gain)2 × resistance gain
=
× resistance gain
=
× 3
= (60)2 × 3 = 3600 × 3 = 10800
(emitter current)
⇒ Ie = 120 + 2 = 122mA
Resistance gain = 3
d.c.power gain
= (current gain)2 × resistance gain
=
× resistance gain =
× 3= (60)2 × 3 = 3600 × 3 = 10800
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