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The current gain for a transistor working as common-base amplifier is 0.96. If the emitter current is 7.2 mA, then the base current is
(a) 0.29mA
(b) 0.35mA
(c) 0.39mA
(d) 0.43mA
(a)
Current gain (a) =0.96
Ic = 0.96 × 7.2 mA = 6.91 mA
Ic = Ic + Ib
Ib = Ie – Ic = 7.2 - 6.91 = 0.29 mA
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