First slide

Alternating Current and voltage

Question

An alternating emf is applied across a parallel combination of a resistance R, capacitance C and an inductance L. If I_R, I_L, I_C are the currents through R, L and C respectively, then the diagram which correctly represents, the phase relationship among I_R, I_L, I_C and source emf E, is given by

Moderate

A
B
C
D

Solution

I_L lags behind I_R by a phase of $\frac{π}{2}$ , while I_C leads by a phase of $\frac{π}{2}$ .

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