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 correctely represents, the phase relationship among `I_(R),I_(L),I_(C)` and source emf `E`m is given by

An alternating emf is applied across a parallel combination of a resistance R, capacitance C and an inductance L. If underset(R )(I) , underset(L)(I) and underset(C )(I) are the currents through R,L and C respectively, the phase relationship among underset(R )(I) , underset(L)(I) and underset(C )(I) and source emf E, is given by

In a circuit resistance R , capacitance C , and inductance L are in series with a sinusoidal power source. If the voltage across R, C and L are 80V, 10V and 70V respectively, then the voltage across the source terminals will be

Figures shows a parallel LCR circuit connected to a 200V, AC source. L=5H, C=80muF and R=40Omega . At resonance let I_(1) and i_(2) be the rs currents through L,C and R. Then

If L,R,C and V respectively represent inductance resistance, capacitance and potential difference then the dimensions of (L)/(RCV) are the same as those of :

When a battery is connected across a series combination of self inductance L and resistance R , the variation in the current i with time t is best represented by