Home
Class 12
PHYSICS
It is found that the current in the circ...

It is found that the current in the circuit is `0.50A` with D.C. source and `0.40A` with A.C. sources. The voltage `E` for D.C. is `120V` and for A.C. is `120V`. The frequency of A.C. source is `60Hz`. The inductance of the circuit is

A

`0.28H`

B

`0.80H`

C

`0.60H`

D

`0.48H`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    TARGET PUBLICATION|Exercise COMPETITIVE THINKING|158 Videos

  • ELECTROMAGNETIC INDUCTION

    TARGET PUBLICATION|Exercise EVALUATION TEST|8 Videos

  • ELECTROMAGNETIC INDUCTION

    TARGET PUBLICATION|Exercise EVALUATION TEST|8 Videos

  • ELASTICITY

    TARGET PUBLICATION|Exercise Evaluation test|14 Videos

  • ELECTROSTATICS

    TARGET PUBLICATION|Exercise EVALUATION TEST|14 Videos

Similar Questions

Explore conceptually related problems

A bulb is connected to a 100 V DC supply . It is found that the current of 5 A flows in the circuit. The same bulb is connected to an AC supply at 120 V . The frequency of source is 50 Hz. Calculate the inductance of coil required so that the lamp glows in an AC circuit too.

A 120 volt AC source is connected across a pure inductor of inductance 0.70 henry. If the frequency of the source is 60Hz , the current passing through the inductor is

How does inductive reactance vary when frequency of a.c. source in the circuit is halved ?

The voltage of A.C source varies with tiem according equation. V = 120 sin 100 pi t cos 100 pi t .Then the frequency of source is

In the circuit shown, a 30 V d.c. source gives a current 2.0 A as recorded in the ammeter A and 30 V a.c. source of frequency 100 Hz gives a currentd 1.2 A . The inductive reactance is

When 100 volt d.c. is applied across a solenoid, a current of 1.0 A flows in it. When 100 volt a.c. is applied across the same coil, the current drops to 0.5 A. If the frequency of a.c. source is 50 Hz the impedance and inductance of the solenoid is

A multimeter reads a voltage of a certain A.C. source as 100V . What is the peak value of voltage of A.C. source?

What is the value of current in the a.c. circuit containing R=10Omega, C=50 muC in series across 200 V, 50 Hz a.c. source?

TARGET PUBLICATION-ELECTROMAGNETIC INDUCTION-CRITICAL THINKING
  1. A series RLC circuit has the following values R=20Omega, X(L)=10Omega....

    Text Solution

    |

  2. When 100 V DC is applied across a solenoid, a current of 1.0 A flows i...

    Text Solution

    |

  3. It is found that the current in the circuit is 0.50A with D.C. source ...

    Text Solution

    |

  4. A variable capacitor and an inductive coil with negligible resistance ...

    Text Solution

    |

  5. The e.m.f. and the current of an A.C. circuit are e=5cos omega t volt ...

    Text Solution

    |

  6. Average power lost per cycle of A.C. is given by

    Text Solution

    |

  7. In an A.C. circuit, the current flowing in inductance is I = 5 sin (10...

    Text Solution

    |

  8. When a coil is connected to a D.C. source of e.m.f. 12 volt, then a cu...

    Text Solution

    |

  9. The equations of voltage and current in an A.C. circuit are e=100 sin ...

    Text Solution

    |

  10. The r.m.s current in an AC circuit is 2A. If the wattless current be s...

    Text Solution

    |

  11. If power factor is 1//2 in a series RL, circuit R=100 Omega. AC mains ...

    Text Solution

    |

  12. 2.5/(pi) muF capacitor and 3000-ohm resistance are joined in series t...

    Text Solution

    |

  13. A resistor R, an inductor L and a capacitor C are connected in series ...

    Text Solution

    |

  14. A coil of 4mH and a capacitor of 10 muF are in series with an A.C. sou...

    Text Solution

    |

  15. The frequency at which the inductive reactance of 2 H inductance will ...

    Text Solution

    |

  16. An A.C. voltage of r.m.s. value 0.1V is applied to an LCR series circu...

    Text Solution

    |

  17. The frequency at which 9.0mh inductor and 10 mu F capacitor will have ...

    Text Solution

    |

  18. A group of electric lamps having a total power rating of 1000 watt is ...

    Text Solution

    |

  19. A coil has a inductance of 0.7H and is joined in series with a resista...

    Text Solution

    |

  20. What is the r.m.s. value of an alternating current which when passed t...

    Text Solution

    |