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How is the input impedance of a current gain with resistive load amplifier?

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How is the input impedance of a current gain with resistive load amplifier?

(a) Irrelevant

(b) Moderate

(c) Low

(d) High

I had been asked this question in a national level competition.

This interesting question is from Current Gain with Resistive Load topic in division High Frequency Transistor of Electronic Devices & Circuits

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The correct answer is (d) High

The explanation is: The construction of a current gain with resistive load circuit are approximately similar to a normal amplifier. One of the most important differentiating feature of a current gain with resistive load circuit is its high input impedance.

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