Home
Class 12
PHYSICS
In an AC circuit, a resistance of Rohm i...

In an AC circuit, a resistance of `Rohm` is connected is series with an inductance `L`. If phase angle between volage and current be `45^(@)`, the value of inductive reactance will be

A

`R/4`

B

`R/2`

C

`R`

D

Cannot be found with the given data

Text Solution

Verified by Experts

The correct Answer is:
C

`tan varphi=(X_(L))/R implies tan 45^(@)=(X_(L))/R=1 implies X_(L)=R`
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    A2Z|Exercise Different Ac Circuits|30 Videos
  • ALTERNATING CURRENT

    A2Z|Exercise Power In Ac Circuits|21 Videos
  • ALTERNATING CURRENT

    A2Z|Exercise Section D - Chapter End Test|30 Videos
  • ATOMIC PHYSICS

    A2Z|Exercise Section D - Chapter End Test|30 Videos

Similar Questions

Explore conceptually related problems

In an A.C. circuit, a resistance R=40 Omega and an inductance L are connected in series. If the phase angle between voltage and current is 45^(@) , then the value of the inductive reactance will be

An inductor (L) and resistance (R) are connected in series with an AC source. The phase difference between voltage (V) and current (i) is 45^(@) . Now a capacitor (C) is connected in series with L-R, If the phase difference between V and i remain same, then capacitive reactance and impedance of L-C-R circuit will be-

An inductance and a resistance are connected in series with an AC potential . In this circuit

In a simple circuit with resistance, phase between AC emf and AC current is

The phase angle between current and voltage in a purely inductive circuit is

A series LCR circuit, has equal resistance capacitive reactance. What is the phase angle between voltage across generator and resistor ?

In an L-R circuit, an inductance of 0.1 H and a resistance of 1 Omega are connected in series with an ac source of voltage V = 5 sin 10 t. The phase difference between the current and applied voltage will be

In an L-R circuit, an inductance of 0.1 H and a resistance of 1 Omega are connected in series with an ac source of voltage V = 5 sin 10 t. The phase difference between the current and applied voltage will be

A2Z-ALTERNATING CURRENT-Connected With Ac
  1. Same current is flowing in two alternating circuits. The first circuit...

    Text Solution

    |

  2. In a series circuit R=300Omega, L=0.9H, C=2.0 muF and omega=1000rad//s...

    Text Solution

    |

  3. In a L-R circuit, the value of L is (0.4/(pi)) henry and the value of ...

    Text Solution

    |

  4. An e.m.f. E=4cos(1000t)volt is applied to an LR circuit of inductance ...

    Text Solution

    |

  5. In an AC circuit, a resistance of Rohm is connected is series with an ...

    Text Solution

    |

  6. If an 8Omega resistance and 6Omega reactance are present in an AC seri...

    Text Solution

    |

  7. A 220V,50Hz Ac source is connected to an inductance of 0.2H and a resi...

    Text Solution

    |

  8. When 100volts DC is applied across a coil, a current of 1amp flows thr...

    Text Solution

    |

  9. A circuit has a resistance of 11 Omega, an inductive reactance of 25 O...

    Text Solution

    |

  10. A 0.7 henry inductor is connected across a 120 V-60 Hz AC source. The ...

    Text Solution

    |

  11. There is a 5 Omega resistance in an AC, circuit. Impedence of 0.1 H is...

    Text Solution

    |

  12. The coefficient of induction of a choke coil is 0.1 H and resistance i...

    Text Solution

    |

  13. In a series LCR circuit, resistance R=10Omega and the impedence Z=20Om...

    Text Solution

    |

  14. A 12 ohm resistor and a 0.21 henry inductor are connected in series to...

    Text Solution

    |

  15. A coil of inductance L has an inductive reactance of X(L) in an AC cir...

    Text Solution

    |

  16. The impedence of a consists of 3ohm resistance and 4ohm reactance. The...

    Text Solution

    |

  17. In an AC circuit the reactance of a coil is sqrt(3) times its resistan...

    Text Solution

    |

  18. The figure shows variation of R,X(L) and X(C) with frequency f in a se...

    Text Solution

    |

  19. A constant voltage at different frequencies is applied across a capaci...

    Text Solution

    |

  20. In pure inductive circuit, the curves between frequency f and reciproc...

    Text Solution

    |