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Match List-I with List-II
List-I
(a) Phase difference between current and voltage in a purely resistive AC circuit
(b) Phase difference between current and voltage in a pure inductive AC circuit
(c) Phase difference between current and voltage in a pure capacitive AC circuit
(d) Phase difference between current and voltage in an LCR series circuit
List-II
(i) π/2; current leads voltage
(ii) zero
(iii) π/2; current lags voltage
(iv) tan⁻¹((X_C − X_L)/R)
Choose the most appropriate answer from the options given below:
- (a)-(i),(b)-(iii),(c)-(iv),(d)-(ii)
- (a)-(ii),(b)-(iv),(c)-(iii),(d)-(i)
- (a)-(ii),(b)-(iii),(c)-(iv),(d)-(i)
- (a)-(ii),(b)-(iii),(c)-(i),(d)-(iv)
Correct answer: (a)-(ii),(b)-(iii),(c)-(i),(d)-(iv)
Solution
Resistive -> phase zero (ii); inductive -> current lags by pi/2 (iii); capacitive -> current leads by pi/2 (i); LCR -> tan^-1((Xc-Xl)/R) (iv). Hence (a)-(ii),(b)-(iii),(c)-(i),(d)-(iv).
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