Home
Class 12
PHYSICS
A capacitor and the resistor are connect...

A capacitor and the resistor are connected in series with an ac source. IF the potential differences acorrs C,R are 120 V, 90 V respectively and if the rms current of the circuit is 3A , calculate the power factor of the circuit.

Text Solution

Verified by Experts

Power factor of the circuit,`costheta=V_R/V=90/150=0.6`
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise HIGH ORDER THINKING SKILL (HOTS) QUESTIONS|13 Videos

  • ALTERNATING CURRENT

    CHHAYA PUBLICATION|Exercise NCERT TEXTBOOK QUESTIONS WITH ANSWER HINT|33 Videos

  • CHHAYA PUBLICATION|Exercise EXAMPLE|1 Videos

  • ATOM

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|18 Videos

Similar Questions

Explore conceptually related problems

A capacitor and the resistor are connected in series with an ac source. IF the potential differences acorrs C,R are 120 V, 90 V respectively and if the rms current of the circuit is 3A , calculate the impedance.

Three capacitors, 3muF,6muF" and 6muF are connected in series to a source of 120V. The potential difference, in volts, across the 3muF capacitor will be

A resistor, R=300Omega and a capacitor , C=25muF are connected in series with an ac source. The peak value of voltage (V_0) and the frequency (f) of the source are 150 V and and 50/pi Hz respectively. Find the peak value of current and the power dissipated in the circuit.

A 25muF capacitor, a 0.10 henry inductor and a 25.0Omega resistor are connected in series with an ac source whose emf is given by E=310sin314t.Calculate (a) the reactance of the circuit,(b) the impedance of the circuit and ( c) current in the circuit.

The rms values of the terminal potential differences of R ,L and C of a series circuit are 80V ,70V and 10V respectively.What is the rms value of the applied emf in the circuit?

If a source of electricity having potential difference 10 V sends 5 A current through a circuit for 2 minutes then calculate the amount of work done by the source.

An alternating voltage 5V of frequency 50 Hz is connected to a series LCR circuit. The potential difference across the inductor and resistor are 6V and 4V respectively. What is the voltage across the capacitor (in V)?

A capacitor, a resistor ad a 40 mH inductor are connected in series to an ac source of frequency 60Hz. Calculate the capacitance of the capacitor , if current is in phase with the voltage.

n capacitors, each of capacity C, are connected in series and to a source of V volt. What will be the energy stored in the arrangement?

CHHAYA PUBLICATION-ALTERNATING CURRENT -CBSE SCANNER
  1. A capacitor and the resistor are connected in series with an ac source...

    Text Solution

    |

  2. Mention the two characteristic properties of the material suditable fo...

    Text Solution

    |

  3. State the underlying principle of a transformer. How is the large scal...

    Text Solution

    |

  4. An alternating voltage given by V=140sin314t is connected across a pur...

    Text Solution

    |

  5. An alternating voltage given by V=140sin314t is connected across a pur...

    Text Solution

    |

  6. In an A.C. circuit, the potential difference across an inductance and ...

    Text Solution

    |

  7. For a given ac i=imsinomegat, show that the average power dissipated i...

    Text Solution

    |

  8. A light bulb is rated at 100 W for a 220V ac supply. Calculate the res...

    Text Solution

    |

  9. Why is the use of ac voltage preferred over dc voltage? Given two reas...

    Text Solution

    |

  10. A voltage V0sinomegat is applied to a series LCR circuit, Derive the e...

    Text Solution

    |

  11. Define the term 'quality factor' of resonance in series LCR circuit. W...

    Text Solution

    |

  12. Show that the average power consumed in an inductor L connected to an ...

    Text Solution

    |

  13. In a series LR circuit, XL=R and the power factor of the circuit is P1...

    Text Solution

    |

  14. State the principle of an ac generator.

    Text Solution

    |

  15. Explain briefly, with the help of labelled diagram, and obtain the exp...

    Text Solution

    |

  16. Draw a schematic diagram showing the nature of the alternating emf gen...

    Text Solution

    |

  17. When an ac source is connected to an ideal capacitor, show that the av...

    Text Solution

    |

  18. A bulb is connected in series with a variable capacitor and an ac sour...

    Text Solution

    |

  19. In a series LCR circuit connected to an ac source of voltage v=vmsinom...

    Text Solution

    |

  20. A derive 'X' is connected to an ac source V=V0sinomegat.The variation ...

    Text Solution

    |

  21. A derive 'X' is connected to an ac source V=V0sinomegat.The variation ...

    Text Solution

    |