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Alternating Current — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsAlternating Current1 Mark
MCQ
In the given circuit what is the potential drop across resistance?
Image
  • A
    $40 V$
  • B
    $80 V$
  • ✓
    $120 V$
  • D
    zero
✓

Answer

Correct option: C.
$120 V$

At resonance the voltage across $L$ and $C$ are same but opposite.
So, at resonance $\mid\text{V}_\text{L}\mid=\mid\text{V}_\text{C}\mid$
$\therefore\text{V}_\text{R}=\text{V}_\text{app}=120\text{V}$

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