This question was asked inSupervisor Instructor Electrical Part B Technical Paper 2026Question 101 of 120 published · Gujarat Subordinate Service Selection BoardOpen paper
Q101EasyAC Circuits

In a parallel R-L-C circuit, where the resistor (R), inductor (L) and capacitor (C) are in separate branches, which of the following values remains the same in all branches?

Answer & step-by-step solution
Correct answer: C. The applied voltage.
Quick explanation

C — The applied voltage. All branches of a parallel circuit are connected between the same two nodes, so they share the same voltage; branch currents differ.

Detailed solution (in the paper’s original language)

સમજૂતી

Parallel circuit ની બધી branches એ જ બે nodes વચ્ચે જોડાયેલી હોય છે.

તેથી resistor, inductor અને capacitor — બધી branches પર applied voltage સમાન રહે છે. Branch currents, impedances અને powers અલગ હોઈ શકે છે.

મુખ્ય ખ્યાલ

Parallel connection → દરેક branch પર same voltage.

સૂત્ર

VR = VL = VC = Vsupply.

પરીક્ષા મુદ્દો

Phasor relation પહેલાં basic connection rule લાગુ કરો.

ઝડપી ટ્રિક

Parallel → same V; series → same I.

બીજા વિકલ્પો ખોટા કેમ છે

Branch current branch impedance પર આધારિત હોવાથી RLC parallel circuit માં તે સામાન્ય રીતે equal નથી.

સામાન્ય ભૂલ

Node પર currents add થાય છે એટલે branch currents same છે એવું માનવું.

Solution diagram – In a parallel R-L-C circuit, where the resistor (R), inductor (L) and…
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