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If an emitter current is changed by 4 mA, the collector current changes by 3.5 mA. The value of $\beta$ will be:
(1) 7
(2) 0.875
(3) 0.5
(4) 3.5
$\alpha = 3.5/4 = 7/8$. $\beta = \alpha/(1-\alpha) = (7/8)/(1/8) = 7$.
BETA
