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MHT CET Medical202621 April 2026Evening ShiftPhysicsAlternating CurrentActual

When a.c. source is connected across a resistance, the correct phasor relation between the current ( i_R ) and emf ( e_R ) is shown in figure

Options

  1. A(B)
  2. B(D)
  3. C(A)
  4. D(C)

Correct answer

B. (D)

Step-by-step solution

In a purely resistive AC circuit, the alternating current and the alternating voltage (emf) are always in phase. This means the phase difference between them is zero. Therefore, the phasors representing the current ( i_R ) and the emf ( e_R ) must be parallel and point in the same direction. Looking at the given figures: (A) shows current leading emf by 90^ . (B) shows current lagging emf by 90^ . (C) shows current and emf out of phase by 180^ . (D) shows current and emf in phase. Thus, figure (D) correctly represe

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