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Q.

The current gain of transistor in common emitter mode is 49 The change in collector current and emitter current corresponding to the change in the base current by 5.0 μA, will be

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a

245μA, 250μA

b

240μA, 235μA

c

260μA, 255μA

d

none of these

answer is A.

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Detailed Solution

Given that,Base currentΔib=5μAcurrent gainβ=49current gainβ=ΔicΔibCollector currentΔic=βΔibΔic=49×5Δic=245μAEmitter currentΔie=Δib+ΔicΔie=5+245=250μA
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