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Consider the following statements regarding JFET: 1. The relationship between the drain current and gate-to-source voltage of a JFET is a nonlinear. 2. The minimum current for JFET occurs at pinch-off voltage defined by VGS = VP. 3. A current controlled device is one in which a current defines the operating conditions of the device. Which of the above statements are correct?

Consider the following statements regarding JFET: 1. The relationship between the drain current and gate-to-source voltage of a JFET is a nonlinear. 2. The minimum current for JFET occurs at pinch-off voltage defined by VGS = VP. 3. A current controlled device is one in which a current defines the operating conditions of the device. Which of the above statements are correct? Correct Answer 1 and 2 only

The relationship between the drain current and gate-to-source voltage defines as:

ID=IDSS(1-(VGS / Vp)2

where,

ID=drain current, IDSS=maximum saturation current, VGS=gate to source voltage, Vp=pinch of voltage

drain current, and gate-to-source voltage in JFET are nonlinearly related(option 1 is correct)

In the JFET transistor at VGS=Vp drain current is zero which is the minimum drain current . (option 2 is correct)

current control devices are the device in which input current control output current or voltage, in BJT transistor base current control collector and emitter current and BJT are known as a current control device.(option 3 incorrect)

Additional Information 

The FET transistors are voltage-controlled devices whereas the BJT transistors are current-controlled devices. The FET transistors have three terminal drains, source, and gate which are equivalent to the collector, emitter, and base terminals in BJT transistors.

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