Question

for a transistor current gain of common base configuration is 0.8. if transistor is in common emitter configuration and the base current changes by 5mA, then change in collecter current is​

Answer 1

Answer:

$\alpha = 0.8 \\ we \: know \: that \: \beta = \alpha \div 1 + \alpha$

$therefore \: \beta = 4 \\ now \: \beta = change \: in \: collector \: current \div chnge \: in \: base \: current \\ keeping \: \: the \: collector \: emiter \: voltge \: const. \\ therefore \: ic = \beta \times ib = 20m \: amp$