Analog Electronics
Electron mobility is defined as

 Drift velocity per unit field
 Diffusion velocity per unit field
None of these
 the movement of electrons

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

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

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