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JEE Main 2021 · 24 Feb · Shift 1, Physics question 16

If an emitter current is changed by 4 mA, the collector current changes by 3.5 mA. The value of β will be :

Choose one option
Answer and worked solution

Official answer: A

Base current change 4−3.5=0.54-3.5=0.5 mA, so β=3.50.5=7\beta=\frac{3.5}{0.5}=7.

(A)

Topics:Transistors
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