Transconductance can be increased by . . . . . . . . A. Decreasing the width B. Increasing the width C. Increasing the length D. Decreasing the length

The correct answer is: B. Increasing the width.

Transconductance is the ratio of the change in drain current to the change in gate voltage. It is a measure of how much current a transistor can source or sink for a given change in gate voltage.

The transconductance of a transistor can be increased by increasing the width of the channel. This is because a wider channel has more carriers available to be moved by the gate voltage.

The other options are incorrect because they would decrease the transconductance of the transistor.

• Decreasing the width of the channel would decrease the number of carriers available to be moved by the gate voltage. This would decrease the transconductance.
• Increasing the length of the channel would increase the resistance of the channel. This would decrease the current that can be sourced or sunk for a given change in gate voltage. This would decrease the transconductance.

Therefore, the correct answer is B. Increasing the width.