Home
Class 12
PHYSICS
A fuse wire of radius 0.1 mm can withsta...

A fuse wire of radius 0.1 mm can withstand a maximum current of 1 A . What is the minimum radius of a fuse wire , made of the same meatal , that should be used to run a 220 V - 100 W heater using a 220 V mains ?

Text Solution

Verified by Experts

The correct Answer is:
0.274 mm
Promotional Banner

Topper's Solved these Questions

  • ELECTRIC ENERGY AND POWER

    CHHAYA PUBLICATION|Exercise Problem Set - II|6 Videos

  • ELECTRIC ENERGY AND POWER

    CHHAYA PUBLICATION|Exercise ENTRANCE CORNER (Assertion - reason type )|5 Videos

  • ELECTRIC ENERGY AND POWER

    CHHAYA PUBLICATION|Exercise EXERCISE ( Short Answer Type Questions - II )|3 Videos

  • DIGITAL CIRCUITS

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|6 Videos

  • ELECTRIC FIELD

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|31 Videos

Similar Questions

Explore conceptually related problems

What should you do to run a 220 V - 600 W appliance using a 400 V mains ?

Statement I : A fuse wire of diameter 0 .5 mm can with 0 stand a maximum current of 1 A . For a current of 8 A , a fuse wire made of the same alloy should have a diameter of 2 mm . Statement II : The radius r of a fuse wire and the maximum safe current I that may pass through it are related as Ipropr^(3//2) .

A galvanometer of resistance 200Omega can withstand a maximum current of 1 mA. What is the resistance of shunt that should be connected in parallel to get an ammeter of range 0-1 A?

What is be the strength of current through a heater coil if a 220 V-0.5 kWh heater is used in 220 V line ?

The resistance of an electrical appliance is 200 Omega and it can withstand a maximum current of 1A. To operate the appliance on a dc source of 220 V what minimum resistance should be connected in series with it?

A heater of resistance 140 Omega capable of carrying a current of 1.2 A is put in a dc mains of 210 V. Find out the minimum value of an additional resistance to be added to run the heater.

The ration of the radii of two fuse wires of the same material is 1:4 . What is the maximum safe current (in A ) for the second wire , if that for the first wie is 1 A ?

How many 60 W bulbs may be safely run on 220 v using a 5 A fuse?

The resistance of an electrical appliance is 200 Omega and it can withstand a maximum current of 0.1A.A dc source ,which can send 1A main current,is connected with this appliance,How much resistance should be connected In parallel with the appliance to run it with safety?

CHHAYA PUBLICATION-ELECTRIC ENERGY AND POWER-Problem Set - I
  1. An electric bulb is marked 100 w - 230 V . How much energy is produced...

    Text Solution

    |

  2. A current of 5 A flows through an electric press of resistance 44Omega...

    Text Solution

    |

  3. An electric bulb rated for 500 watt at 100 volt is connected to a 200 ...

    Text Solution

    |

  4. Two resistances 2Omega and 6Omega are connected in parallel and the co...

    Text Solution

    |

  5. Two resistances 2Omega and 6Omega are connected in series and the comb...

    Text Solution

    |

  6. If the voltage of supply line drops to 180 V , what will be the power ...

    Text Solution

    |

  7. Two electric lamps marked 110V- 60W and 110V - 100W are connected in ...

    Text Solution

    |

  8. Each of two electric lamps of power 500 W is designed to work in 220 V...

    Text Solution

    |

  9. In a Wheststone bridge P=20 Omega,Q=10Omega,R=10Omegaand S=5Omega. . ...

    Text Solution

    |

  10. An electric heater is marked 110 V - 550 W and it is to be used in 200...

    Text Solution

    |

  11. An electrical circuit contanis an electrical appliance od reasistance ...

    Text Solution

    |

  12. Two wires of same measurements are taken . The ratio of specific resia...

    Text Solution

    |

  13. The ratio of resitance in the fourn arms of a Wheatstone bridge is 3...

    Text Solution

    |

  14. A fuse wire of radius 0.1 mm can withstand a maximum current of 1 A . ...

    Text Solution

    |

  15. Two electric lamps marked 110V- 60W and 110V - 100W are connected in ...

    Text Solution

    |

  16. A 110V -550W hearter is to be used with a 220V mains. What is the mini...

    Text Solution

    |

  17. How many 60 W bulbs may be safely run on 220 v using a 5 A fuse?

    Text Solution

    |

  18. If 10 bulbs of 40 each and 3 of 100w each run on the average for 5 hou...

    Text Solution

    |

  19. In a house there are 10 lamps of 40 W each , 5 fans of 80 W each and a...

    Text Solution

    |

  20. The main meter of a house contains a 5A fuse. 4 lamps rated 220V- 60 w...

    Text Solution

    |