Match each of the items A, B and C with and appropriate

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Match each of the items A, B and C with and appropriate item from 1, 2, 3, 4 and 5.
In a JFET
(A) the pinch-off voltage decreases
(B) the transconductance increases
(C) the transit time of the carriers in the channel is reduced
1. the channel doping is reduced
2. the channel length is increased
3. the conductivity of the channel increased
4. the channel length is reduced
5. the gate area is reduced

1. A-1, B-4, C-5
2. A-2, B-1, C-3
3. A-3, B-2, C-1
4. A-4, B-3, C-2

Correct Option: A

We know that, pinch-off voltage

\| V_P \| =	q·N_D·a²	where V_P = pinch-off voltage
	2∈₀

a = channel width
N_D = doping concentration
∈ = relative permeability Hence
A – 1

I_D = b N_D. µ_n		W			. V_DS → hence B – 4
		L

Gate decide the flow of electrons to the drain. Hence C – 5.
Therefore
A – 1
B – 4
C – 5
Hence alternative (A) is the correct choice.