In a series LCR circuit the voltage across an inductor, capacitor and resistor are 20 V, 20 V and 40 V respectively. The phase difference between the

Question

In a series LCR circuit the voltage across an inductor, capacitor and resistor are 20 V, 20 V and 40 V respectively. The phase difference between the

In a series LCR circuit the voltage across an inductor, capacitor and resistor are 20 V, 20 V and 40 V respectively. The phase difference between the applied voltage and the current in the circuit is
A. `30^(@)`
B. `45^(@)`
C. `60^(@)`
D. `0^(@)`

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

Correct Answer - D
Let `phi` be the phase difference between the applied voltage and current. Then
`tan phi = (X_(L)-X_(C ))/(R )=(I_(V)(X_(L)-X_(C )))/(I_(V)R)`
`=(V_(L)-V_(C ))/(V_(R ))=(20V-20V)/(40V)=0`
`therefore phi = tan^(-1)(0)=0^(@)`

5 views Answered 2023-02-05 15:29