Home
Class 12
PHYSICS
A room is lighted by 200W,124 V incandes...

A room is lighted by `200W,124 V` incandescent lamps fed by a generator whose output voltage is `130 V`. The conducting wires from the generator to the user are made of aluminimum wire of total length 150 m and cross-sectional area `15 mm^(2)`. How many such length can be installed ? What is the total power consumed by the user ? sp. resistance of aluminium is `2.9 xx 10^(-4) Omega m `

Promotional Banner

Topper's Solved these Questions

  • ELECTROSTATIC FORCES, CHARGES AND FIELDS

    SL ARORA|Exercise Problems For Self Practice|1 Videos
  • MAGNETIC EFFECTS OF CURRENT

    SL ARORA|Exercise TYPE C|4 Videos

Similar Questions

Explore conceptually related problems

A room is lighted by 200W, 124V incandescent lamps fed by a genrator whose output voltage is 130V. The connecting wires from the generator to the user are made of aluminium wire of total length 130V and cross-sectional area 15 mm^(2) . How many such lamps can be installed? What is the total power consumed by the user?Specific resistance of aluminium =2.9xx10^(-8)Omega m.

The resistance of a wire of length 330m and cross-section area 1.0 mm^(2) made of material of resistivity 1.0 xx 10^(-7) Omegam is:

Calculate the resistance of an aluminium wire of length 50 cmand cross sectional area 2.0mm^(2) . The resistivity of aluminium is (rho)=2.6xx10^(-8)(Omega)m.

A nichrome wire of length 100 cm and area of cross-section 0.5 m m^(2) has a resistance of 2.2 Omega . The resistivity of nichrome is

Resistance of the conductor of length 5m and area of cross -section 4 mm^(2) s 0.02 Omega . Its resistivity is

Calculate the conductivity of a wire of length 2 m, area of cross-sectionl 2 cm^(2) and resistance 10^(-4) Omega .

SL ARORA-HEATING EFFECT OF CURRENT-All Questions
  1. A 50 W bulb is connected in a 200V line. Determine the current flowing...

    Text Solution

    |

  2. Three equal resistor connected in series across a source of enf toget...

    Text Solution

    |

  3. A room is lighted by 200W,124 V incandescent lamps fed by a generator ...

    Text Solution

    |

  4. An electric heater consists of 20m length of manganin wire of 0.23 m^(...

    Text Solution

    |

  5. Two electric bulbs rated as 100W. 220V and 25W,220V are connected in s...

    Text Solution

    |

  6. Find the cost of electricity for running an electric motor of 1 hp the...

    Text Solution

    |

  7. The heater coil of an electric kettle is rated as 2000W at 200V. How m...

    Text Solution

    |

  8. A copper kettle weighing 1000g holds 1900g of water at 19^(@)C. it tak...

    Text Solution

    |

  9. A 30V storage battery is being charged by 120V d.c. supply. A resistor...

    Text Solution

    |

  10. Calculate the power dissipated in the various resistances and the powe...

    Text Solution

    |

  11. Calculate the rate of productive of heat in the four arms of the Wheat...

    Text Solution

    |

  12. A house is fitted with 10 lamps rated 100W each, four fans each contai...

    Text Solution

    |

  13. Following items are used in a house: What will be the electric bi...

    Text Solution

    |

  14. A house if fitted with a motor of 1 H.P., 5 lamps consuming 0.2 A each...

    Text Solution

    |

  15. A 40 V battery of internal resistance 6 Omega is connected to a variab...

    Text Solution

    |

  16. An accumulator of emf epsilon and internal resistance r is first conne...

    Text Solution

    |

  17. A series battery of 6 lead accumulators, each of emf 2.0V and internal...

    Text Solution

    |

  18. A fuse wire of circular cross-section has a radius of 1mm. This wire b...

    Text Solution

    |

  19. A current of 2A is passed through a wire immersed in 80 g of water ini...

    Text Solution

    |

  20. (i) A storage battery of emf 8V, internal resistance 1 Omega is being ...

    Text Solution

    |