-Refer to the figure above. If ID = 4 mA, IDSS = 16 mA, and VGSoff)= - 8 V, VDS would be
A)10.8 V.
B)19.2 V.
C)30 V.
D)- 6 V.

Question

-Refer to the figure above. If ID = 4 mA, IDSS = 16 mA, and VGSoff)= - 8 V, VDS would be
A)10.8 V. 
B)19.2 V. 
C)30 V. 
D)- 6 V.

Quizplus · Accepted Answer

The drain current ID is given by the equation ID = IDSS(1 - VGS/VGSoff)^2. Solving for VGS when ID = 4 mA, IDSS = 16 mA, and VGSoff = -8 V, we find VGS = -4 V. Using the Shockley's equation for JFETs, VDS can be calculated using the given parameters and the supply voltage, which results in VDS = 10.8 V.

-Refer to the Figure Above