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Alternating Current — Physics STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 SciencePhysicsAlternating Current1 Mark
MCQ
An A.C. circuit containing only capacitance, the current:
  • A
    Lags the voltage by 90°
  • B
    Leads the voltage by 90°
  • C
    Remains in phase with voltage
  • D
    Lags the voltage by 180°
✓

Answer

  1. Leads the voltage by 90°

Explanation:

In an a.c. circuit containing resistance onIy voltage & current remain in the same phase. If circuit contains inductance only, voltage remains ahead of current by phase difference of 90°. If circuit contains capacitance only, current remains ahead of voltage by a phase difference of 90°.

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