Question

the current in a lcr circuit is least when. a ) xl =0 b) xc= 0 c) xl=xc d) xl=xc/= maximum​

Answer 1

Explanation:

the current in a lcr circuit is least when. a ) xl =0 b) xc= 0 c) xl=xc d) xl=xc/= maximum

---option d

Answer 2

Answer:

a) If Xl=0, Current in LCR circuit is same as current in CR circuit

b) If Xc=0, Current in LCR circuit is same as current in LR circuit

c) If Xl=Xc, It is resonant circuit and current is maximum

d) Idk what u have wrote cant understand

Explanation:

a) IF Xl=0,

$z= \sqrt{ {r}^{2} + ( {xc}^{2}) }$

Therefore current, i= V/z

b) IF Xc=0,

$z = \sqrt{ {r}^{2} + ( {xl}^{2} )}$

Therefore current, i= V/z

c) IF Xl=Xc, It is series LCR circuit under resonance condition

$z = r$

Therefore it acts like pure resistive circuit and current, i= V/r