A coil of inductive reactance `31 Omega` has a resistance of `8 ohm`. It is placed in series with a condenser of capacitive reactance `25 Omega`. The combination is connected to an `ac` source of `110 V`. The power factor of the circuit isA. 0.56B. 0.64C. 0.8D. 0.33

A coil of inductive reactance `31 Omega` has a resistance of `8 ohm`.

1.	A coil of inductive reactance `31 Omega` has a resistance of `8 ohm`. It is placed in series with a condenser of capacitive reactance `25 Omega`. The combination is connected to an `ac` source of `110 V`. The power factor of the circuit isA. 0.56B. 0.64C. 0.8D. 0.33
Answer» Correct Answer - C Power factor =cos`phi=(R)/(\|Z\|)=(8)/sqrt(8^(2)+(31-25)^(2)` `(8)/sqrt(8^(2)+6^(2))=(8)/(10)=0.8`

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A coil of inductive reactance `31 Omega` has a resistance of `8 ohm`. It is placed in series with a condenser of capacitive reactance `25 Omega`. The combination is connected to an `ac` source of `110 V`. The power factor of the circuit isA. 0.56B. 0.64C. 0.8D. 0.33

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