gm is . . . . . . . . on input voltage Vbe. A. Inversely proportional B. Proportional C. Exponentially dependent D. Is not dependent

The correct answer is: B. Proportional

The transconductance (gm) of a transistor is the ratio of the change in collector current (ΔIc) to the change in base-emitter voltage (ΔVbe). It is a measure of how much current the transistor can amplify.

The transconductance of a transistor is proportional to the input voltage (Vbe). This means that the higher the input voltage, the higher the transconductance.

The transconductance of a transistor is also affected by the temperature. The higher the temperature, the lower the transconductance.

The transconductance of a transistor is an important parameter in the design of amplifiers. It is used to calculate the gain of an amplifier.

The other options are incorrect because:

• Option A is incorrect because the transconductance is proportional to the input voltage, not inversely proportional.
• Option C is incorrect because the transconductance is not exponentially dependent on the input voltage.
• Option D is incorrect because the transconductance is dependent on the input voltage.