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Same amount of current will flow in all the three circuit components and vector sum of potential drop across each component would be equal to the applied voltage
If i be the amount of current in the circuit at any time and V L , V C and V R the potential drop across L , C and R respectively then
V R = iR ⇒ Voltage is in phase with i V L = iωL ⇒ Voltage is leading i by 90 0 V C = i / ωC ⇒ Voltage is lagging behind i by 90 0
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Since V L is ahead of i by 90 and V C is behind by 90 so that phase difference between V L and V C is 180 and they are in direct opposition to each other as shown in the figure 12 ( b )