Home
Class 11
PHYSICS
A bulb is rated at 100V, 100W. It can be...

A bulb is rated at `100V`, `100W`. It can be treated as a resistor. Find out the inductance of an inductor (called choke coil) that should be connected in series with the bulb at its rated power with the help of an ac source of `200V` and `50Hz`.

A

`pi/sqrt(3) H`

B

`100H`

C

`sqrt(2)/pi H`

D

`sqrt(3)/pi H`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

An electric bulb is rated at 220V, 100W. What is its resistance?

An electric bulb rated 100 W, 100V has to be operated across 141.4 V, 50 Hz A.C. supply. The capacitance of the capacitor which has to be connected in series with bulb so that will glow with full intensity is

A bulb is marked 220V, 100W. What will be the current in the filament when connected to 200V?

A 100 W bulb designed to operate on 100 V is to be connected across a 500 V source . Find the resistance to be put in series so that bulb consumes 100 W only.

If two bulbs, both of rated power 100 W at 220 V, are connected in series with a 220 V supply, the total power consumed by the bulbs will be:

A bulb rated at (100 W – 200 V ) is used on a 100 V line. The current in the bulb is

DISHA-ALTERNATING CURRENT-PHYSICS
  1. A coil of inductance 300mh and resistance 2Omega is connected to a sou...

    Text Solution

    |

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

    Text Solution

    |

  3. A bulb is rated at 100V, 100W. It can be treated as a resistor. Find o...

    Text Solution

    |

  4. An ac source of angular frequency omega is fed across a resistor R and...

    Text Solution

    |

  5. Large transformers, when used for some time, become hot and are cooled...

    Text Solution

    |

  6. An inductor of inductance L = 400 mH and resistors of resistance R(1) ...

    Text Solution

    |

  7. An ideal coil of 10H is connected in series with a resistance of 5(Ome...

    Text Solution

    |

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

    Text Solution

    |

  9. In an oscillating LC circuit the maximum charge on the capacitor is Q....

    Text Solution

    |

  10. A fully charged capacitor C with initial charge q(0) is connected to a...

    Text Solution

    |

  11. For an LCR series circuit with an aac source of angular frequency omeg...

    Text Solution

    |

  12. The rms value of potential difference V shown in the figure is

    Text Solution

    |

  13. Which of the following statements is/are incorrect?

    Text Solution

    |

  14. A lamp consumes only 50% of peak power in an a.c. circuit. What is the...

    Text Solution

    |

  15. A step down transformer reduces 220 V to 110 V. The primary draws 5 am...

    Text Solution

    |

  16. The voltage time (V-t) graph for triangular wave having peak value V(0...

    Text Solution

    |

  17. The tuning circuit of a radio receiver has a resistance of 50Omega , a...

    Text Solution

    |

  18. In an alternating current circuit in which an inductance and capacitan...

    Text Solution

    |

  19. A coil has resistance 30 ohm and inductive reactance 20 ohm at 50 Hz f...

    Text Solution

    |

  20. In the figure shown, three AC voltmeters have been connected. At reson...

    Text Solution

    |