Home
Class 11
PHYSICS
An ac source of angular frequency omega ...

An ac source of angular frequency `omega` is fed across a resistor R and a capacitor C in series. The current registered is I. If now the frequency of source is changed to `omega//3` (but maintaining the same voltage), the current in the circuit is found to be halved. Calculate the ratio of the reactance to resistance at the original frequency `omega`.

A

`sqrt(3/5)`

B

`sqrt(2/5)`

C

`sqrt(1/5)`

D

`sqrt(4/5)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

An ac source of angular frequency omega is fed across a resistor R and a capacitor C in series. The current registered is I. If now the freqency of source is chaged to (omega)//3 (but maintainging the same voltage), the current in the circuit is found to be halved. Calculate the ration of hte reactance to resistance at the original frequency omega .

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 now the frequency of the source is changed to omega//3 (but maintaining the same voltage), the current in the circuit is found to be halved. calculate the ratio of reactance to resistance at the original frequency omega .

An AC source of angular frequency omega is fed across a resistor R and a capacitor C in series. The current registered is I . If now the frequency of source is changed to omega//3 (but maintaining the same voltage), the current in the circuit is found to be halved. The ratio of reactance to resistance at the original frequency omega will be.

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 .

An AV voltage source is applied across an R-C circuit. Angular frequency of the source is omega , resistance is R and capacitance is C. The current registered is I. If now the frequency of source is changed to omega/2 (but maintaining the same voltage), the current in the circuit is found to be two third. calculate the ratio of reactance to resistance at the original frequency omega .

Resistor of resistance R and capacitor of capacitance C are connected in series to an AC source of angular frequency omega . Rms current in the circuit is I. When frequency of the source is changed to one - third of initial value keeping the voltage same then current is found to be halved. Find the ratio of reactance of capacitor to that with resistance at the original frequency omega .

A series combination of resistor (R), capacitor (C) is connected to an AC source of angular frequency omega . Keeping the voltage same, If the frequency is changed to Omega/3 , the current becomes half of the original current. Then, the ratio of the capacitance reactance and resistance at the former frequency is

DISHA-ALTERNATING CURRENT-PHYSICS
  1. In an AC circuit, a resistance of Rohm is connected is series with an ...

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

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

    Text Solution

    |

  20. A.C. power is transmitted from a power house at a high voltage as

    Text Solution

    |