Home
Class 12
PHYSICS
An a.c. source of angular frequency omeg...

An a.c. source of angular frequency `omega` is fed across a resistor R and a capacitor C in series. The current registered is I. If you the frequency of source is changed to `omega//3`, maintaining the same voltage, current in the circuits is found to be halved. Caculate the ratio of reactance to resistance at the original frequency` omega.`

A

`sqrt(1//5)`

B

`sqrt(2//5)`

C

`sqrt(3//5)`

D

`sqrt(4//5)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • TEXTUAL QUESTIONS

    MODERN PUBLICATION|Exercise EXERCISE|507 Videos

  • STRUCTURE OF NUCLEUS

    MODERN PUBLICATION|Exercise EXERCISE|47 Videos

  • TEXUAL QUESTIONS

    MODERN PUBLICATION|Exercise EXERCISE|195 Videos

Similar Questions

Explore conceptually related problems

An a.c. source of 200 V, 50 Hz is connected across a 400 Omega resistor and capacitor of 25pF in series. Calculate reactance

An a.c. source of 200 V, 50 Hz is conneted across a 300 ohm resistor and a capacitor of 25//pi muF in series. Calculate the current in the circuit.

An a.c. source of 200 V, 50 Hz connected across a 400Omega resistor and an inductor of 3/piH in series. Calculatecurrent in the circuit.

An a.c. source of 200 V , 50 Hz is connected across a 400 ohm resistor and an inductor of 3//pi H in series. Calculate current in the circuit

An a.c. source of 200 V, 50 Hz connected across a 400Omega resistor and an inductor of 3/piH in series. Calculate impedance

An a.c. source of 200 V, 50Hz is connected across a 300Omega resistor and capacitor of 25/pi muF in series. Calculate (a) reactance: current in the circuit.

An a.c. source of 200 V, 50Hz is connected across a 300Omega resistor and capacitor of 25/pi muF in series. Calculate (a) reactance: impedance

An a.c. Voltage is applied to a resistance R=30 Omega and an inductor L in series. If the inductive reactance is also 30 Omega , the phase difference between the applied voltage and the current in the circuit is

MODERN PUBLICATION-TEXTUAL QUESTIONS-EXERCISE
  1. An a.c. source of angular frequency omega is fed across a resistor R a...

    Text Solution

    |

  2. For current entering at A, the electric field E(r at a distance r form...

    Text Solution

    |

  3. A material 'B' has twice the specific resistance of 'A'. A circular wi...

    Text Solution

    |

  4. The length of a given cylindrical wire is increased by 100%. Due to th...

    Text Solution

    |

  5. If a wire is stretched to make it 0.1% longer, its resistance of will

    Text Solution

    |

  6. An electric current is passed through a circuit containing two wires o...

    Text Solution

    |

  7. By increasing the temperature, the specific resistance of a conductor ...

    Text Solution

    |

  8. A strip of copper another of germanium are cooled from room temperatur...

    Text Solution

    |

  9. The difference in the variation o resistance with temperature in a met...

    Text Solution

    |

  10. The thermistors are usually made of

    Text Solution

    |

  11. The resistance of a bulb filmanet is 100Omega at a temperature of 100^...

    Text Solution

    |

  12. The resistance of a wire is 5 ohm at 50^@C and 6 ohm at 100^@C. The re...

    Text Solution

    |

  13. The resistance of hot tungsten filament is about 10 times the cold res...

    Text Solution

    |

  14. An electric bulb is rated 220 V and 100 W. when it is operated on 110 ...

    Text Solution

    |

  15. An 220 volt-1000 watt bulb is connected across a 110 volt mains supply...

    Text Solution

    |

  16. A heater coil is cut into two equal parts and only one part is now use...

    Text Solution

    |

  17. If in the circuit, power dissipation is 150 W, then R is

    Text Solution

    |

  18. A wire when connected to 220 V mains supply has power dissipation P1. ...

    Text Solution

    |

  19. The resistance of the series combination of two resistances is S. WHen...

    Text Solution

    |

  20. A 3 V battery with negligible internal resistance is connected in a ci...

    Text Solution

    |

  21. What will be the value of current through 2Omega resistance for the ci...

    Text Solution

    |