MHT CET · Physics · Alternating Current
For series LCR circuit, which one of the following is a CORRECT statement?
- A Potential difference across \(\mathrm{R}\) and that across capacitor have phase difference of \(\frac{\pi}{2}\)
- B Applied e.m.f. and potential difference across resistance ' \(R\) ' are in the same phase
- C Applied e.m.f. and potential difference across inductor coil has phase difference of \(\frac{\pi}{2}\)
- D Potential difference across capacitor and that across inductor have phase difference of \(\frac{\pi}{2}\)
Answer & Solution
Correct Answer
(A) Potential difference across \(\mathrm{R}\) and that across capacitor have phase difference of \(\frac{\pi}{2}\)
Step-by-step Solution
Detailed explanation
(A) is correct.
(B) is wrong. There is phase difference \(\phi\) between the applied emf e and \(\mathrm{e}_{\mathrm{R}}\)
(C) is wrong. There is phase difference of \(\left(\frac{\pi}{2}-\phi\right)\) between \(\mathrm{e}\) and \(\mathrm{e}_{\mathrm{L}}\)
(D) is wrong. There is a phase difference of \(\pi\) between \(\mathrm{e}_{\mathrm{C}}\) and \(\mathrm{e}_{\mathrm{L}}\)
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