For a transistor amplifier,the voltage gain:

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(A) The frequency response curve of a transistor amplifier shows that the voltage gain is not uniform across all frequencies.At low frequencies,the co

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is low at high and low frequencies and constant at mid frequencies

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(A) The frequency response curve of a transistor amplifier shows that the voltage gain is not uniform across all frequencies.At low frequencies,the coupling and bypass capacitors have high reactance,which reduces the gain.At high frequencies,the internal junction capacitances of the transistor and stray capacitances become significant,providing a low-impedance path that shunts the signal,thereby reducing the gain.In the mid-frequency range,these effects are negligible,and the amplifier provides a stable and maximum voltage gain.Therefore,the voltage gain is low at both low and high frequencies and remains constant in the mid-frequency range.

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