Charge will flow between emitter and collector terminals depending on the current in the base.
2.
In this case the Resistance R is the resistor connected at the collector terminal and the capacitor C is connected in between the amplifiers.
3.
The tiny junction and stray capacitances between the base and collector terminals of a Darlington transistor, for example, may be drastically increased by the Miller effects due to its high gain, lowering the high frequency response of the device.
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