The reverse bias is applied by a battery voltage Vgs connected between the gate and the source terminal i.e positive terminal of the battery is connected to the source and negative terminal to gate. By Varying the value of V ds holding V gs constant.There are two ways to control the channel width When the negative gate bias voltage is further increased, the depletion regions meet at the center and Id is cut off completely. ![]() Its resistance is increased, and I d is reduced. The result is that the channel is narrowed. ![]() of charge carriers so it behaves as an insulator.
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