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MHT CET 2021 (23 Sep, Shift 2) · Junction Transistor

Junction Transistor question from MHT CET 2021 (23 Sep, Shift 2)

Q69MHT CET 2021 · 23 SEP · SHIFT 2Medium

Junction Transistor

In a CE transistor, a change of $8.0\text{ mA}$ in the emitter current produces a change of $7.8\text{ mA}$ in the collector current. What change in the base current is necessary to produce the same change in the collector current?

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Answer: (a)

$I_E = I_B + I_C \Rightarrow \Delta I_B = \Delta I_E - \Delta I_C$
$\Delta I_B = 8.0 - 7.8 = 0.2$ mA $= 200\ \mu$ A.
So the answer is (a) $200\ \mu$ A.

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