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A common gate amplifier has _______

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A common gate amplifier has _______

(a) low input impedance

(b) high input impedance

(c) infinite input impedance

(d) no impedance

I got this question in examination.

I need to ask this question from A Generalized FET Amplifier in section Field-Effect Transistors of Electronic Devices & Circuits

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The correct option is (a) low input impedance

To elaborate: Common gate amplifier just like common base amplifier had a very large voltage gain but input impedance is very low. Also, it gives unity current gain. Hence, the power of the amplified signal will be less.

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