Home
Class 12
PHYSICS
A heater is rated as 220 volts, 880 watt...

A heater is rated as 220 volts, 880 watts. What is the current drawn by the heater when connected to a 220V a.c. mains? Calculate the resistance of heater.

Promotional Banner

Topper's Solved these Questions

  • Electric Charges and Electrostatic Force

    PUNJAB BOARD PREVIOUS YEAR PAPERS|Exercise Exercise|39 Videos

  • Electric Field

    PUNJAB BOARD PREVIOUS YEAR PAPERS|Exercise Exercise|35 Videos

Similar Questions

Explore conceptually related problems

An electric lamp marked 220 V d.c. consumes a current 10A. It is connected to a 250 V - 50 Hz a.c. mains through a choke. Calculate the inductance of the choke required.

A light bulb is rated at 100 W for a 220 V a.c. supply. Find the resistance of the bulb.

An electric lamp, which runs at 100 volt d.c. and 10 ampere current, is to be run on 220 volt - 50 cycles a.c. mains. Calculate the inductance of the required choke coil.

Calculate the resistance of a bulb rated 100 W, 220V. What is the current flowing in the bulb when connected across a potential difference of 220 V?

How much current will a heater rated 2.5 kW draw, whe nconnected to a 250 V electric supply?

PUNJAB BOARD PREVIOUS YEAR PAPERS-Electric Current, Resistance and E.M.F. -Exercise
  1. To produce 10^3 Joules of heat in 10 seconds, how much voltage should ...

    Text Solution

    |

  2. A current of 5 ampere flows in a 10 ohm resistor. Calculate rate of he...

    Text Solution

    |

  3. A heater is rated as 220 volts, 880 watts. What is the current drawn b...

    Text Solution

    |

  4. A carbon resistor has three colours yellow, blue and red respectively....

    Text Solution

    |

  5. A carbon resistor has three colours red, yellow and blue respectively....

    Text Solution

    |

  6. Two resistances when connected in series give a total resistance of 18...

    Text Solution

    |

  7. Two resistances are inthe ratio of 1:4.If these are connected in paral...

    Text Solution

    |

  8. Two resistances when connected in series give a resistance of 9Q and w...

    Text Solution

    |

  9. How will you represent aresistance of 3700 Omega +- 10% by colour codi...

    Text Solution

    |

  10. Calculate the resistivity of the material of wire 1.0 m (meter) long 0...

    Text Solution

    |

  11. A wire of length15m (meter) and uniform area of cross section 6.0 xx 1...

    Text Solution

    |

  12. A wire of length 2.0 m, diameter 1.0 mm has 50 xx 10^-3 Omega (ohm) re...

    Text Solution

    |

  13. A parallel combination of three resistors takes a current of 5A from a...

    Text Solution

    |

  14. The parallel combination of three resistors takes a current of 7.5A fr...

    Text Solution

    |

  15. A series combination of three resistors takes a current of 2A from a 2...

    Text Solution

    |

  16. A wire has a resistance of 10.5Omega at 21^@C and 16.4Omega at 147^@C....

    Text Solution

    |

  17. A resistance of a tungsten filament at 150^@C is 133Omega.What will be...

    Text Solution

    |

  18. A silver wire has a resistance of 2.1Omega at 27.5^@C and a resistance...

    Text Solution

    |

  19. Three identical cells of emf 4V each and unknown internal resistances ...

    Text Solution

    |

  20. If maximum resistance from the combination of two resistances is 18 oh...

    Text Solution

    |