Home
Class 12
PHYSICS
An inductance L , a capacitor of 20muF a...

An inductance L , a capacitor of `20mu`F and a resistor of `10Omega` are connected in series with an AC source of frequency 50 Hz . If the current is in phase with the voltage, then the inductance of the inductor is

A

`upsilon=0`

B

`upsilon lt upsilon_(r)`

C

`upsilon = upsilon_(r)`

D

`upsilon gt upsilon_(r)`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    RESONANCE ENGLISH|Exercise Exercise -2 Part-1|14 Videos

  • ALTERNATING CURRENT

    RESONANCE ENGLISH|Exercise Exercise -2 Part-2|6 Videos

  • ALTERNATING CURRENT

    RESONANCE ENGLISH|Exercise HIGH LEVEL PROBLEMS|11 Videos

  • ATOMIC PHYSICS

    RESONANCE ENGLISH|Exercise Advanved level problems|17 Videos

Similar Questions

Explore conceptually related problems

An inductor 20 mH , a capacitor 100muF and a resistor 50Omega are connected in series across a source of emf V=10sin314t . The power loss in the circuit is

A capacitor, a resistor and a 40 mH inductor are connected in series to an a.c. source of frequency 60 Hz. Calculate the capacitance of the capacitor,if current is in phase with the voltage.

An inductor 20 mH , a capacitor 50 muF and a resistor 40 Omega are connected in series across of emf V=10 sin 340 t . The power loss in A.C. circuit is

An inductor 200 mH, capacitor 500mu F and resistor 10 Omega are connected in series with a 100 V variable frequency ac source. What is the frequency at which the power factor of the circuit is unity?

An inductor 20xx10^(-3) a capacitor 100(mu)F and a resistor 50 Omega are connected in series across a source of emf V=10 sin 314 t . Then the energy dissipated in the circuit in 20 mim is

A resistor R , an inductor L and a capacitor C are connected in series to an oscillator of frequency n . If the resonant frequency is n_r, then the current lags behind voltage, when

An inductor 20xx10^(-3) a capacitor 100(mu)F and a resistor 50 Omega are connected in series across a source of emf V=10 sin 314 t . If resistance is removed from the circuit and the value of inductance is doubled, the variation of current with time in the new circuit is

If resistance R = 10 Omega , inductance L = 2 mH and capacitance C = 5 muF are connected in series to an AC source of frequency 50 Hz, then at resonance the impedance of circuit is

An inductance of 1 mH a condenser of 10 mu F and a resistance of 50 Omega are connected in series. The reactances of inductor and condensers are same. The reactance of either of them will be

A 10 muF capacitor, an inductor and a resistor of 100Omega are connected to an alternating source of emf 200sqrt2 sin 100t as shown in the figure. What is the r.m.s current in the circuit and the value of the inductance if the current and the source voltage attain their maxima simultaneously? What is the average power consumed in this case

RESONANCE ENGLISH-ALTERNATING CURRENT-Exercise -1 Part-1
  1. An alternating voltage E=200sqrt(2)sin(100t) is connected to a 1 micro...

    Text Solution

    |

  2. When 100 V DC is applied across a solenoid, a steady current of 1 A fl...

    Text Solution

    |

  3. In an L-C-R circuit the AC voltage across R, L and C comes out as 10 V...

    Text Solution

    |

  4. In the series L-C-R circuit , the voltmeter and ammeter readings are

    Text Solution

    |

  5. For a series LCR circuit the power loss at resonance is : -

    Text Solution

    |

  6. A series LCR circuit containing a resistance of 120 ohm has angular re...

    Text Solution

    |

  7. In an LCR circuit, the capacitance is made one-fourth, when in resonan...

    Text Solution

    |

  8. An inductance L , a capacitor of 20muF and a resistor of 10Omega are c...

    Text Solution

    |

  9. A resistor R, an inductor L, a capacitor C and voltmeters V(1),V(2) an...

    Text Solution

    |

  10. A power transformer (step up) with an 1:8 turns ratio has 60 Hz,120 V ...

    Text Solution

    |

  11. A trensformer is used to light 140 W, 24 V lamp from a 240 V ac mains...

    Text Solution

    |

  12. In a step-up transformer the voltage in the primary is 220 V and the c...

    Text Solution

    |

  13. The core of a transformer is laminated to reduce

    Text Solution

    |

  14. A capacitor is a perfect insulator for

    Text Solution

    |

  15. A choke coil has

    Text Solution

    |

  16. A choke coil is preferred to a rheostate in AC circuit as

    Text Solution

    |

  17. With increase in frequency of an AC supply, the inductive reactance:

    Text Solution

    |

  18. With increase in frequency of an AC supply, the capacitive reactance:

    Text Solution

    |

  19. An AC ammeter is used to measure current is a circuit . When a given d...

    Text Solution

    |

  20. In an a.c. circuit consisting of resistance R and inductance L, the vo...

    Text Solution

    |