The transistor provide good power amplification when they are used in:
Common collector configuration
Common emitter configuration
Common base configuration
none of these
The transistor provides good power amplification when they are used in common emitter configuration.
For a transistor, the current amplification factor(α) is 0.8. The transistor is connected in common emitter configuration. The change in collector current, when the base current changes by 6 mA is