Question

What is the generalized value for the voltage across resistor RB1 in a unijunction transistor?

(a) VRB1 = (RB2 / RB1 + RB2) × VBB

(b) VRB1 = (RB2 / RB1 – RB2) × VBB

(c) VRB1 = (RB1 / RB1 + RB2) × VBB

(d) VRB1 = (RB1 / RB1 – RB2) × VBB

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This interesting question is from The Unijunction Transistors topic in portion Field-Effect Transistors of Electronic Devices & Circuits

Answer 1

Right choice is (c) VRB1 = (RB1 / RB1 + RB2) × VBB

The explanation is: The generalized value for the voltage across resistor RB1 is (RB1 / RB1 + RB2) × VBB. Where, RB1 and RB2 are the resistance across two terminals B1 and B2. The voltage VBB is the voltage across the two terminals.