Home
Class 12
PHYSICS
In an AC circuit voltage applied is e=22...

In an AC circuit voltage applied is e=220 sin 100 t. if the impedance is `110Omega` and phase difference between the current and voltage is `60^(@)` the power consumption is equal to

A

55 W

B

110 W

C

220 W

D

330 W

Text Solution

Verified by Experts

The correct Answer is:
B

`overline(P)=e_(rms) I_(rms) cosphi=(e^(2))/(2Z)cosphi`
`=(220xx220xxcos60^(0))/(2xx110)=110W`
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY

    NIKITA PUBLICATION|Exercise MCQ|314 Videos
  • ELECTRONS AND PHOTONS

    NIKITA PUBLICATION|Exercise MCQs|162 Videos

Similar Questions

Explore conceptually related problems

In a series LCR circuit resistance R = 10Omega and the impedance Z = 10 Omega The phase difference between the current and the voltage is

In a series LCR circuit, resistance R=10Omega and the impedence Z=20Omega the phase difference between the current and the voltage is

The phase difference between the current and voltage of LCR circuit in series combination at resonance is

In an AC circuit X_(C)=X_(L) . The phase differe3nce between the current and voltage will be

The phase difference between voltage and current in series L-C circuit is

An Ac voltage V=V_0 sin 100t is applied to the circuit, the phase difference between current and voltage is found to be pi/4 , then .

If an AC voltage 100 V is applied between points A and B, then current of 1 A and phase difference between current and voltage will be Deltaphi=37^(@) . IF the same voltage is applied between points B and C, then current of 5 A and Deltaphi =53^(@) What will be the impedance (in Omega) in the chain, if the same voltage is applied between points A and C? Round off to nearest integer.

NIKITA PUBLICATION-ELECTROMAGNETIC INDUCTION-MCQs
  1. In an AC circuit, the current is given by i=5sin(100t-(pi)/2) and the ...

    Text Solution

    |

  2. A 100 W 200 V bulb is connected to a 160 V power supply. The power con...

    Text Solution

    |

  3. In an AC circuit voltage applied is e=220 sin 100 t. if the impedance ...

    Text Solution

    |

  4. An a.c. emf of e=220 sin omega t is applied across the capacitor, the ...

    Text Solution

    |

  5. An a.c. emf of e=220 sin 100pit is passed through the resistance of 1 ...

    Text Solution

    |

  6. In an AC circuit with voltage V and current I, the power dissipated is

    Text Solution

    |

  7. The reactance of capacitor at 50Hz is 10Omega. What will be its reacta...

    Text Solution

    |

  8. Power factor of the AC circuit varies between

    Text Solution

    |

  9. The capacitive reactance of a capacitor is d.c. circuit in ohm is

    Text Solution

    |

  10. The graph between inductive reactance and frequency is

    Text Solution

    |

  11. The alternating emf of e=e(0) sin omegat is applied across LR series c...

    Text Solution

    |

  12. The alternating emf of e=e(0) sin omegat is applied across capacitor C...

    Text Solution

    |

  13. The current leads the voltage by an angle phi which is given by

    Text Solution

    |

  14. The power dissipated in alternating circuit with voltage e=e(0) sin om...

    Text Solution

    |

  15. The powerr factor in CR circuit is given by

    Text Solution

    |

  16. For minimum dissipation energy in the circuit, the power factor should...

    Text Solution

    |

  17. Two electric appliances of power rating W(1) and W(2) at 220 V are con...

    Text Solution

    |

  18. Two electric appliances of power rating W(1) and W(2) t 240 V are conn...

    Text Solution

    |

  19. The rms value of alternating current which when passed through a resis...

    Text Solution

    |

  20. The applied emf lags behind the current by an angle of 45^(@) in the c...

    Text Solution

    |