Home
Class 12
PHYSICS
An AC supply gives 30 V(rms)which passes...

An `AC` supply gives `30 V_(rms)`which passes through a `10 Omega` resistance. The power dissipated in it is

A

`90sqrt(2)W`

B

90 W

C

`45sqrt(2)W`

D

45 W

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

An alternating supply of 220 V is applied across a circuit with resistance 22 Omega and impedance 44 Omega . The power dissipated in the circuit is

The emf of the cell is 1.8 V and internal resistance is 2//3 Omega , calculate the current in the 3 Oemga resistance and the power dissipated in the whole circuit.

An ac source is connected across a resistance of 10 Omega The power dissipated in the resistor is 100W The rms valuse of the current and voltge are .

Four equal resistance dissipated 5 W of power together when connected in series to a battery of negligible internal resistance . The total power dissipated in these resistance when connected in parallel across the same battery would be .

An inductor of reactance 2 Omega and a resistor of 4 Omega are connected in series to the terminals of a 12 V (rms ) AC source. The power dissipated in the circuit is

A series LCR circuit of R = 5 Omega , L = 20mH and C = 0.5 muF is connected across an AC supply of 250 V, having variable frequency. The power dissipated at resonance condition is __________ xx10^(2) W.

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

A inductor of reactance 1 Omega and a resistor of 2 Omega are connected in series to the terminals of a 6 V (rms) a.c. source. The power dissipated in the circuit is

DISHA-ALTERNATING CURRENT-Physics
  1. For a series RLC circuit R=X(L)=2X(C). The impedence of the current an...

    Text Solution

    |

  2. In an AC circuit the voltage applied is E = E(0) sin omega t. The resu...

    Text Solution

    |

  3. An AC supply gives 30 V(rms)which passes through a 10 Omega resistance...

    Text Solution

    |

  4. The figure shows variation of R,X(L) and X(C) with frequency f in a se...

    Text Solution

    |

  5. An alternating e.m.f. of angular frequency omega is applied across an ...

    Text Solution

    |

  6. In the circuit shown in figure neglecting source resistance the voltme...

    Text Solution

    |

  7. In an LCR circuit, the sharpness of resonance depends on

    Text Solution

    |

  8. For series LCR circuit, correct statements are

    Text Solution

    |

  9. An ac source is connected to a resistive circuits. Which of the follow...

    Text Solution

    |

  10. A series LCR arrangement with X(L)=80 Omega, X(c) =50Omega, R=40 Omega...

    Text Solution

    |

  11. In RLC circuit, at a frequency v, the potential difference across each...

    Text Solution

    |

  12. In RLC circuit, at a frequency v, the potential difference across each...

    Text Solution

    |

  13. What will happen to the value of (DeltaV(L)) if the frequency is adjus...

    Text Solution

    |

  14. Assertion: An electric lamp connected in series with a variable capaci...

    Text Solution

    |

  15. Assertion: When capacitive reactance is smaler than the inductive reac...

    Text Solution

    |

  16. Assertion: Chock coil is the prefered over a resistor to adjust curren...

    Text Solution

    |

  17. The resistance of a coil for DC is in ohms. In AC, the resistance

    Text Solution

    |

  18. If instantaneous current is given by i=4 cos(omega t + varphi) amperes...

    Text Solution

    |

  19. In an AC circuit I=100sin 200pit. The time required for the current to...

    Text Solution

    |

  20. The frequency of ac mains in India is

    Text Solution

    |