The correct answer is: A. Directly proportional
The transconductance (gm) of a transistor is the ratio of the change in drain current (Id) to the change in gate-source voltage (Vgs). It is a measure of how much current a transistor can amplify.
The gate-source voltage is the voltage difference between the gate and source terminals of a transistor. The drain current is the current that flows from the drain to the source terminals of a transistor.
The transconductance is directly proportional to the gate-source voltage. This means that if the gate-source voltage increases, the transconductance will also increase. Similarly, if the gate-source voltage decreases, the transconductance will also decrease.
The transconductance is a very important parameter in transistor circuits. It is used to calculate the gain of a transistor amplifier. The gain of a transistor amplifier is the ratio of the output signal to the input signal. The higher the transconductance, the higher the gain of the transistor amplifier.
The transconductance is also used to calculate the current gain of a transistor. The current gain of a transistor is the ratio of the collector current to the base current. The higher the transconductance, the higher the current gain of the transistor.
The transconductance is a very important parameter in transistor circuits. It is used to calculate the gain of a transistor amplifier and the current gain of a transistor.
The other options are incorrect because:
- Option B: Inversely proportional is incorrect because the transconductance is directly proportional to the gate-source voltage.
- Option C: Not dependent is incorrect because the transconductance is dependent on the gate-source voltage.
- Option D: Exponentially proportional is incorrect because the transconductance is not exponentially proportional to the gate-source voltage.