Home
Class 12
PHYSICS
The peak power consumed by a resistive c...

The peak power consumed by a resistive coil when connected to an AC source is `80 W`. Find the energy consumed by the coil in 100 seconds which is many times larger than the time period of the source.

Text Solution

Verified by Experts

Here `P_0 = 80 W`
`P_(rms) = P_0/2 = 40 W`
Energy consumed `=P xx t`
` 40 xx 100`
`=4000J = 4.0KJ`.
Promotional Banner

Topper's Solved these Questions

  • ALTERNATING CURRENT

    HC VERMA|Exercise Objective 2|7 Videos
  • BOHR'S MODEL AND PHYSICS OF THE ATOM

    HC VERMA|Exercise Exercises|46 Videos

Similar Questions

Explore conceptually related problems

An electric kettle has tow heating coils. When one of the coils connected to an AC source, the water in the kettle boils in 10 min. when the other coil is used the water boils in 40 min. if both the coils are connected in parallel, the time taken by the same quantity of water of boil will be

A coil having inductance of 1 mH is connected to an A.C. source, its inductive reactance wil obtained to 1 Omega then what will be the angulai frequency (in rad/s) of an A.C. source ?

A coil of inductance L and resistance R is connected to an A.C. source of V volt. If the angular frequency of the A.C. source is equal to omega "rads"^(-1) , then the current in the circuit will be ………

The voltage of an A.C. source varies with time according to the equation V = 100 sin 100pit cos100pit , where t is in second and V is in volt, then .......

A circuit connected with a source of 230 V, draws a current of 2A and power consumed from it is 100 W, then power factor of the circuit is …….

How much current will an electric heater coil draw from a 220 V source, if the resistance of the heater coil is 100 Omega ?

A coil of inductance 0.50 H and resistance 100 Omega is connected to a 240 V, 50 Hz ac supply. (a) What is the maximum current in the coil? (b) What is the time lag between the voltage maximum and the current maximum?

A coil of 0.01 henry inductance and 1 Omega resistance is connected to 200 V, 50 Hz ac supply. Find the impedance of the circuit and time lag between max. alternating voltage and current.

A choke coil is connected to an AC source. Some power is dissipated in coil. Now a capacitor is connected in series with the coil and source is same, then average power dissipated in the circuit does not changes. If ratio of inductive reactance of coil and capacitive reactance of capacitor is 1/x then find x

HC VERMA-ALTERNATING CURRENT-Exercises
  1. Find the time required for a 50Hz alternating current to become its va...

    Text Solution

    |

  2. The household supply of electricity is at 220 V (rms value) and 50 Hz....

    Text Solution

    |

  3. A bulb rated 60 W at 220 V is connected across a household supply of a...

    Text Solution

    |

  4. An electric bulb is designed to operate at 12 v DC. If this bulb is c...

    Text Solution

    |

  5. The peak power consumed by a resistive coil when connected to an AC so...

    Text Solution

    |

  6. The dielectric strength of air is 3.0 xx 10^6 V/m. A parallel-plate ai...

    Text Solution

    |

  7. The electric current in a circuit is given by I = i0 (t/(tau)) for som...

    Text Solution

    |

  8. A capacitor of capacitance 10 muF is connected to an oscillator giving...

    Text Solution

    |

  9. A coil of inductance 5.0 mH and negligible resistance is connected to ...

    Text Solution

    |

  10. A coil has a resistance of 10 Omega and an inductance of 0.4 henry. It...

    Text Solution

    |

  11. A resistor of resistance 100 Omega is connected to an AC source epsilo...

    Text Solution

    |

  12. In a series RC circuit with an AC source, R = 300 Omega, C = 25 muF, e...

    Text Solution

    |

  13. An electric bulb is designed to consume 55 W when operated at 110 volt...

    Text Solution

    |

  14. In a series LCR circuit with an AC source, R = 300 Omega, C = 20 muF, ...

    Text Solution

    |

  15. Consider the situation of the previous problem. Find the average elect...

    Text Solution

    |

  16. An inductance of 2.0 H, a capacitance of 18 muF and a resistance of 10...

    Text Solution

    |

  17. A coil a capacitor and an AC source of rms voltage 24 V are connected ...

    Text Solution

    |

  18. Figure shows a typical circuit for low-pass filter. An AC input Vi = 1...

    Text Solution

    |

  19. A transformer has 50 turns in the primary and 100 in the secondary. If...

    Text Solution

    |