Home
Class 9
PHYSICS
6 bulbs of 40w are used for 6 hours a da...

6 bulbs of 40w are used for 6 hours a day along with 1 bulb of 100w for 2 hours. Calculate units of energy consumed in 20 days

Promotional Banner

Topper's Solved these Questions

  • WORK AND ENERGY

    MODERN PUBLICATION|Exercise EXERCISE|191 Videos

  • SOUND

    MODERN PUBLICATION|Exercise EXERCISE|137 Videos

Similar Questions

Explore conceptually related problems

An electric bulb of 60 W is used for 6 hours per day. Calculate the units of energy consumed in one day by the bulb.

Five bulb each having 100w power are used for 4hrs, a heater having 1500w power is used 2 hrs and an electric iron of power 1000 w is used for 5 hrs for 30 days. Calculate the total energy consumed by them.

The filament of an electric bulb draws a current of 0.4 ampere.Calculate the amount of charge flowing through the filament if the bulb glows for 2 hours.Also calculate the number of electrons passed.

An electric bulb of power 40 W is lighted daily for 8 hours for 15 days how many units of electric energy will be consumed? also find the amount of electric bill if the rate of electricity consumption is rs.8.00 per unit

If an electric bulb of 100 watt is lighted for 2 hours, how much electricity is consumed?

Calculate the electricity bill amount for the month of November of a family if 4 tube lights of 40 W each for seven hours, a TV of 150 W for three hours and two bulbs of 60 W each for four hours are used per day. The cost per unit is RS 3.50.

An electric heater of 1000W is used for 2 hours a day. What is the cost of using it for a month of 28 days, if 1 unit costs is 3.00 ?

An electric bulb is rated 220V and 100 W. what is its resistance? Five such bulbs burn for 4 hours. What is the electrical energy consumed? Calculate the cost if the rate is 50 paise per unit.

MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
  1. 6 bulbs of 40w are used for 6 hours a day along with 1 bulb of 100w fo...

    Text Solution

    |

  2. Does work has direction associated with it?

    Text Solution

    |

  3. For what value theta is work done maximum

    Text Solution

    |

  4. For what value theta is work done zero?

    Text Solution

    |

  5. When work is measured in J, force is measured in and displacement is ...

    Text Solution

    |

  6. A person is walking on a horizontal road and carrying a briefcase. The...

    Text Solution

    |

  7. Work done by centripetal force is zero . (T or F)

    Text Solution

    |

  8. A coolie moves on a horizontal platform with luggage on his head. The ...

    Text Solution

    |

  9. Define work. Write its formula. What is the SI unit of work? Is it a s...

    Text Solution

    |

  10. Give three situations in which a force produces displacement but still...

    Text Solution

    |

  11. A horizontal force acts on a body placed on a smooth horizontal table ...

    Text Solution

    |

  12. A horizontal force of 20 N is required to keep a body moving in a hori...

    Text Solution

    |

  13. Find the work done in lifting a 50 kg bucket a water through a vertic...

    Text Solution

    |

  14. Does kinetic energy of a body depend on the direction of motion of the...

    Text Solution

    |

  15. When you are climbing stairs, work done by the weight is positive. (T ...

    Text Solution

    |

  16. The ratio S.I unit to C.G.S. unit of work is .

    Text Solution

    |

  17. Can every force do work?

    Text Solution

    |

  18. When work is done on a body then kinetic energy of the body. (increase...

    Text Solution

    |

  19. A book falls freely from the table top. Is work done by some force dur...

    Text Solution

    |

  20. A boy sitting in a moving car possesses kinetic energy.

    Text Solution

    |

  21. If momentum of a body is doubled, the kinetic energy becomes times.

    Text Solution

    |