Analog Electronics
The amount of time between the creation and disappearance of a free electrons is called

 recombination
 life time of the carriers
 bound electrons
 drift velocity

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Analog Electronics
Voltage Series (feedback also called series-shunt feedback) results in

Increase in input impedance & decreases in output impedance
Decreases in both input & output impedances
Decrease in input impedance & increase in output impedance
Increase in both input & output impedances

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