Q156 / 160 · AP EAMCET 2021 (24 Aug Shift 2) · Physics

The current and emf through an inductance differ by phase by

  • A
    $\frac{\pi}{4}$
  • Correct answer
    B
    $\frac{\pi}{2}$
  • C
    $\frac{\pi}{3}$
  • D
    $\pi$

Solution

We know that, in pure inductive circuit, Alternating voltage, $V=V_0 \sin \omega t$ and alternating current, $I=I_0 \sin (\omega t-\pi / 2)$ From the above two equations, it can be seen that alternative current and EMF differ by $\frac{\pi}{2}$ phase.

Hence, the correct answer is option: 'B'.

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