Home
Class 12
PHYSICS
When 100" volt" dc is applied across a c...

When `100" volt" dc` is applied across a coil, a current of `1 amp` flows through it, when `100 V` ac of `50 Hz` is applied to the same coil, only 0.5 amp flows. Calculate the resistance and inductance of the coil.

A

`100Omega. Sqrt(3)//piH`

B

`10Omega, sqrt(3)//piH`

C

`100Omega, (2sqrt(3))/piH`

D

`100Omega, (3sqrt(3))/piH`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    MOTION|Exercise EXERCISE - 2 (LEVEL - II)|5 Videos
  • ALTERNATING CURRENT

    MOTION|Exercise EXERCISE - 3 (LEVEL - I)|11 Videos
  • ALTERNATING CURRENT

    MOTION|Exercise EXERCISE - 1|20 Videos
  • 10 ROTATIONAL

    MOTION|Exercise Exercise - 4 (Level - II)|49 Videos
  • ATOMIC STRUCTURE & X-RAY

    MOTION|Exercise Exercise - 2|31 Videos

Similar Questions

Explore conceptually related problems

When 100 V dc is applied across a coil, a current of 1A flows through it and when 100 V ac of 50 Hz is applied to the same coil, only 0.5 flows The resistance is

When 100 V dc is applied across a coil, a current of 1A flows through it and when 100 V ac of 50 Hz is applied to the same coil, only 0.5 flows The inductance of coil is

When 100V dc is applied across a coil a current of 1 A flows through it When 100V ac of 50Hz is applied across the same coil only 0.5A flows The resistance and inductance of the coil are ( take pi^(2) =10) .

When 100 volts DC is applied across a coil, a current of 1amp flows through it. When 100 volt AC at 50 cycles s^(-1) is applied to the same coil, only 0.5 ampere current follows.

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 current of 1 A flows through a coil, when a 100 V d.c. is applied to it. But a current of 0.5 A flows through the same coil, when a 100V a.c. of frequency 50 Hz is applied. The resistance and inductance of the coil are given by (take pi^(2)=10 )

When 100 V dc is applied across a solinoid, a current of 1.0 A flows in it. When 100 V ac is applied across the same coil. The current drops to 0.5A. If the frequency of the ac source is 50 Hz, the impedance and inductance of the solenoid are

When 100 V DC is applied across a solenoid, a steady current of 1 A flows in it. when 100V AC is applied across the same solenoid, the current drops to 0.5 A. If the frequency of the Ad source is 150// sqrt3pi Hz , the impedance and inductance of the solenoid are

MOTION-ALTERNATING CURRENT-EXERCISE - 2 (LEVEL - I)
  1. In an a.c circuit, V & I are given by V = 100 sin (100 t) volt. I = ...

    Text Solution

    |

  2. If I(1), I(2), I(3) " and " I(4) are the respective r.m.s. values of t...

    Text Solution

    |

  3. If instantaneous value of current is I = 10 sin (314 t) A, then the av...

    Text Solution

    |

  4. In a circuit an a.c. current and a d, c. current are supplied together...

    Text Solution

    |

  5. The emf and the current in a circuit are – E=12sin(100pit),i=4sin(100p...

    Text Solution

    |

  6. The value of alternating e.m.f. is e = 500 sin 100pit, then the freque...

    Text Solution

    |

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

    Text Solution

    |

  8. A series LCR circuit is tuned to resonance. The impedance of the circu...

    Text Solution

    |

  9. A capacitor C with a charge Q(0) is connected across an inductor throu...

    Text Solution

    |

  10. When 100" volt" dc is applied across a coil, a current of 1 amp flows ...

    Text Solution

    |

  11. A series circuit consists of a resistance, inductance and capacitance....

    Text Solution

    |

  12. Power factor of an L-R series circuit is 0.6 and that of a C-R series ...

    Text Solution

    |

  13. The potential difference V across and the current I flowing through an...

    Text Solution

    |

  14. A voltage of peak value 283 V and varying frequency is applied to seri...

    Text Solution

    |

  15. The power factor of the circuit in fig. is 1//sqrt(2). The capacitance...

    Text Solution

    |

  16. An L-C-R series circuit with 100Omega resistance is connected to an AC...

    Text Solution

    |

  17. A current of 4A flows in a coil when connected to a 12V DC source. If ...

    Text Solution

    |

  18. A capacitor C=2muF and an inductor with L = 10 H and coil resistance 5...

    Text Solution

    |

  19. Which of the following options are correct :

    Text Solution

    |