Home
Class 10
PHYSICS
An electric heater of resistance 8 Omega...

An electric heater of resistance `8 Omega` draws `15 A` from the service mains for `2` hours. Calculate the rate at which heat is developed in the heater.

Text Solution

Verified by Experts

The correct Answer is:
1800 J
Promotional Banner

Topper's Solved these Questions

  • ELECTRICITY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Very Short Answer Type Questions|1 Videos

  • ELECTRICITY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Short Answer Type Questions|2 Videos

  • ELECTRICITY

    LAKHMIR SINGH & MANJIT KAUR|Exercise Sample Problem|1 Videos

  • MAGNETIC EFFECT OF ELECTRIC CURRENT

    LAKHMIR SINGH & MANJIT KAUR|Exercise NCERT BOOK|2 Videos

Similar Questions

Explore conceptually related problems

A 10 ohm electric heater operates on a 110 V line. Calculate the rate at which it develops heat in watts

An electric heater of resistance 15Omega is run for 8 sec on 120 V line. The energy liberated in this period of time is

An electric room heater has a resistance of 25 Omega and operates at 220 V for 12 minutes. Calculate heat energy dissapated by it in kilojoules.

An electric iron of resistance 20 Omega takes a current of 5 A . Calculate the heat developed in 30 s .

An electric heater draws a current of 5 A when connected to 220 V mains. Calculate the resistance of its filament.

LAKHMIR SINGH & MANJIT KAUR-ELECTRICITY -Exercise
  1. When a current of 4.0A passes through a certain resistor for 10 minute...

    Text Solution

    |

  2. A heating coil has a resistance of 200 Omega. At what rate will heat b...

    Text Solution

    |

  3. An electric heater of resistance 8 Omega draws 15 A from the service m...

    Text Solution

    |

  4. A resistance of 25 Omega is connected to a 12V battery. Calculate the ...

    Text Solution

    |

  5. 100 J of heat are produced each second in a 4 Omega resistance. Find t...

    Text Solution

    |

  6. (a) Derive the expression for the heat produced due to a current 'I' f...

    Text Solution

    |

  7. The heat produced by passing an electric current through a fixed resis...

    Text Solution

    |

  8. The current passing through an electric kettle has been doubled. The h...

    Text Solution

    |

  9. What is an electric fuse? How does it function?

    Text Solution

    |

  10. The elements of electrical heating devices are usually made of:

    Text Solution

    |

  11. The heat produced in a wire of resistance 'x' when a current 'y' flows...

    Text Solution

    |

  12. Which of the following characteristic is not suitable for a fuse wire?

    Text Solution

    |

  13. In a filament type light bulb, most of the electric power consumed app...

    Text Solution

    |

  14. Which of the following is the most likely temperature of the filament ...

    Text Solution

    |

  15. If the current flowing through a fixed resistor is halved, the heat pr...

    Text Solution

    |

  16. The electrical resistivities of four materials P,Q,R and S are given b...

    Text Solution

    |

  17. (a) How does the wire in the filament of a light bulb behave different...

    Text Solution

    |

  18. Two exactly similar heating resistances are connected (i) in series, a...

    Text Solution

    |

  19. Which electric heating devices in your home do you think have resistor...

    Text Solution

    |

  20. What does an electric circuit mean ?

    Text Solution

    |