For a common base transistor,the current gain | vedclass

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(A) Given: Current gain $\alpha = 0.98$ and change in emitter current $\Delta i_e = 2 \ mA$.We know that the collector current change is given by $\De

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$0.04$

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(A) Given: Current gain $\alpha = 0.98$ and change in emitter current $\Delta i_e = 2 \ mA$.We know that the collector current change is given by $\Delta i_c = \alpha \Delta i_e$.Substituting the values: $\Delta i_c = 0.98 	imes 2 = 1.96 \ mA$.Using the relation for transistor currents,$\Delta i_e = \Delta i_b + \Delta i_c$,we can find the change in base current $\Delta i_b$.$\Delta i_b = \Delta i_e - \Delta i_c = 2 \ mA - 1.96 \ mA = 0.04 \ mA$.

For a common base transistor,the current gain is $\alpha = 0.98$. To produce a change of $2 \ mA$ in the emitter current,the change in the base current must be ......... $mA$.

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