With the drain connected to a positive voltage and the source grounded, the JFET is biased off when the gate is connected to ground.

Question

Quizplus · Accepted Answer

For an N-channel JFET, connecting the gate to ground with the source also grounded and applying a positive voltage to the drain typically biases the JFET in the on state, allowing current to flow from drain to source. The JFET is turned off by applying a negative voltage to the gate relative to the source.

With the Drain Connected to a Positive Voltage and the Source