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In a series LR circuit XL = R and power factor of the circuit is P1. When capacitor with capacitance C such that XL = XC is put in series, the power factor becomes P2. The ratio P 1 P 2  is

Option 1 -

12 

Option 2 -

1 2

Option 3 -

3 2

Option 4 -

2 : 1

0 2 Views | Posted a month ago
Asked by Shiksha User

  • 1 Answer

  • P

    Answered by

    Payal Gupta | Contributor-Level 10

    a month ago
    Correct Option - 2


    Detailed Solution:

     P1=cos? =Rz=RXL2+R2

    P1=cos? =RR2=12

    So,  P1P2=1

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