Analog Electronics
When the current gain increases from 50 to 300 in an emitter-biased circuit, the collector current

 is zero.
  remains almost the same.
 decreases by a factor of 6.
 increases by a factor of 6.

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Analog Electronics
When a transistor is connected in common emitter mode, it with have

High input resistance and low output resistance
Low input resistance as well as output resistance
Medium input resistance and high output resistance
Negligible input resistance and high output resistance

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