Discussion
A stability factor of \( 10 \) means a leakage change of \( 2 \ \mathrm{\mu A} \) shifts the collector current by
Answer: A
Multiplying the leakage change by the factor:
\[ \Delta I_{C} = 10 \times 2 = 20 \ \mathrm{\mu A} \]
so 20 microamps. Fixed bias with a beta of 150 would give a factor of 151 and a shift of 300 microamps from the same cause. A sensitivity figure exists precisely so that this multiplication can be done, and comparing arrangements means comparing those factors.
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