Home
Class 10
PHYSICS
A piece of wire of resistance R is cut i...

A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R' then the ratio R/R' is -

A

`(1)/(25)`

B

`(1)/(5)`

C

5

D

25

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTRICITY

    OSWAAL PUBLICATION|Exercise NCERT CORNER ( Intext Questions )|23 Videos
  • LIGHT-REFLECTION AND REFRACTION

    OSWAAL PUBLICATION|Exercise NCERT CORNER (TEXTBOOK EXERCISES)|15 Videos

Similar Questions

Explore conceptually related problems

A piece of wire resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R’ then the ratio R/R' is

A piece of metallic wire of resistance R is cut into 3 equal parts. These parts are then connected in parallel. If the total resistance of this combination is R', then the value of R : R' is

The equivalent resistance of the parallel combination is:

A uniform wire of resistance R and length L is cut into four equal parts, each of length L//4 , which are then connected in parallel. The effective resistance of the combination is

A wire has a resistance of 6 Omega . It is cut into two parts and both half values are connected in parallel. The new resistance is

The resistance of a conductor is 27 . If it is cut into three equal parts and connected in parallel, them its total resistance is

OSWAAL PUBLICATION-ELECTRICITY-Textbook Exercises
  1. A piece of wire of resistance R is cut into five equal parts. These pa...

    Text Solution

    |

  2. Which of the following terms does not represent electrical power in a ...

    Text Solution

    |

  3. An electric bulb is rated 220 V and 100 W. When it is operated on I 10...

    Text Solution

    |

  4. Two conducting wires of the same material and of equal. lengths and eq...

    Text Solution

    |

  5. How is a voltmeter connected in the circuit to measure the potential d...

    Text Solution

    |

  6. A copper wire has diameter 0.5mm and resistivity of 1.6xx10^(-8)Omegam...

    Text Solution

    |

  7. The values of current I flowing in a given resistor for the correspond...

    Text Solution

    |

  8. When a 12 V battery is connected across an unknown resistor there is a...

    Text Solution

    |

  9. A battery of 9V is connected in series with resistors of 0.2Omega,3Ome...

    Text Solution

    |

  10. How many 176Omega resistors (in parallel) are required to carry 5A on ...

    Text Solution

    |

  11. Show how you would connect three resistors, each of resistance 6Omega ...

    Text Solution

    |

  12. Several electric bulbs designed to be used on a 220 V electric supply ...

    Text Solution

    |

  13. A hot plate of an electric oven connected to a 220 V line has two resi...

    Text Solution

    |

  14. Compare the power used in the 2 Omega resistor in each of the followi...

    Text Solution

    |

  15. Two lamps, one rated 100 W at 220 V, and the other 60 W at 220 V, are ...

    Text Solution

    |

  16. Which uses more energy, a 250 W TV set in 1 hr or a 1200 W toaster in...

    Text Solution

    |

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

    Text Solution

    |

  18. Why is the tungsten used almost exclusively for filament of electric l...

    Text Solution

    |

  19. Why are the conductors of electric heating devices, such as bread-toas...

    Text Solution

    |

  20. Why is the series arrangement not used for domestic circuits ?

    Text Solution

    |