Home
Class 10
PHYSICS
Define ruistance. Write the SI unit of r...

Define ruistance. Write the SI unit of resiatance. Match the correct range of rui1tivlty with the materials given :
`{:((i) "Conductors" ,(a)10^(-6) Omegam),((ii) "Alloys" ,(b)10^(12)"to" 10^(17) Omega m),((iii) "Insulators",(c)10^(-6) "to"10^(-8)Omega m):}`

Text Solution

Verified by Experts

Blectrical resistance of a conductor may be considered as a measure of the opposition offered by it for the flow of electric charge through it. SI unit of rnistance is ohm.
`{:((i) "Conductors" ,(a)10^(-6) Omegam),((ii) "Alloys" ,(b)10^(12)"to" 10^(17) Omega m),((iii) "Insulators",(c)10^(-6) "to"10^(-8)Omega m):}`
Promotional Banner

Topper's Solved these Questions

  • ELECTRICITY

    OSWAAL PUBLICATION|Exercise TOPIC-1 (Long Answer Type Questions )|15 Videos

  • ELECTRICITY

    OSWAAL PUBLICATION|Exercise TOPIC-2 ( Multiple Choice Questions )|2 Videos

  • ELECTRICITY

    OSWAAL PUBLICATION|Exercise TOPIC-1 (Short Answer Type Questions -I)|13 Videos

  • LIGHT-REFLECTION AND REFRACTION

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

Similar Questions

Explore conceptually related problems

Calculate the resistance of a metal wire of length 2 m and area of cross section 1·55 xx 10^(-6) m^(2) , if the resistivity of the metal be 2·8 xx 10^(-8) Omega m ?

There are two metallic wires of the same thickness made from iron and silver. If the length of iron wire is 12cm, what should be the length of silver wire which is equal to the resistance of iron wire? Data : Resistivity of iron = 10 xx 10^(-8) Omega m Resistivity of silver = 16 xx 10^(-8) Omega m

The Q value of a nuclear reaction A + b to C + d is defined by Q = [m_A + m_b – m_C – m_d]c^2 where the masses refer to the respective nuclei. Determine from the given data the Q-value of the following reactions and state whether the reactions are exothermic or endothermic. (i) ""_(1)^(1)H + ""_(1)^(3)H to _(1)^(2)H + _(1)^(2)H (ii) ""_(6)^(12)C + ""_(6)^(12)C to ""_(10)^(20)Ne + ""_(2)^(4)He Atomic masses are given to be m (""_(1)^(2)H) = 2.014102 u m (""_(1)^(3)H) = 3.016049 u m (""_(6)^(12)C ) = 12.000000 u m (""_(10)^(20)Ne ) = 19.992439 u .

Judge the equivalent resistance when the following are connected in parallel to" a."1Omegaand10^(6)Omega."b".1Omegaand10^(3)Omegaand10^(6)Omega .

The resistance offered by a wire of unit length and unit cross-sectional area is called resistivity. For a material irrespective of length and area, the resistivity is constant. It is also called specific resistance of the material. Metals and alloys have low resistivity while insulators have high resistivity. Resistivity of two elements A and B are 1.62 xx 10^(-8) Omega m and 520 xx10^(-8) Omega m respectively. Out of these two, name the element that can be used to make : (i) filament of electric bulb. (ii) wires for electrical transmission lines.

Write the mean of the given data : 6,7,10,12,13,4,8,12 ?

OSWAAL PUBLICATION-ELECTRICITY-TOPIC-1 (Short Answer Type Questions -II)
  1. What is meant by saying that the potential difference between two poin...

    Text Solution

    |

  2. What do the symbols given below represent in a circuit ? Write one fun...

    Text Solution

    |

  3. Draw symbol of : (i) Rheostat, (ii) Volbneter, (iii) Electric bulb

    Text Solution

    |

  4. Name and define S.l. unit of resistance. Calculate the resistance of a...

    Text Solution

    |

  5. Define ruistance. Write the SI unit of resiatance. Match the correct r...

    Text Solution

    |

  6. Nichrome wire of length l and radius r has resistance of 10 Omega . Ho...

    Text Solution

    |

  7. Why element of electrical heating devices are made up of alloys ?

    Text Solution

    |

  8. A wire of length I and area of aou-aection A wu dnwn into a wire of do...

    Text Solution

    |

  9. An electric circuit consisting of a 0.5 m long nichrome wire XY, an am...

    Text Solution

    |

  10. Derive an expression for electric energy consumed in a device in terms...

    Text Solution

    |

  11. The resistance of a wire of 0.01 cm radius is 10Omega. If the resistiv...

    Text Solution

    |

  12. There resistors of 3 Omega each are connected to a battery of 3 V as s...

    Text Solution

    |

  13. ln an electric field the work done in bringing a 2 coulomb charge from...

    Text Solution

    |

  14. The resistance per metre length of a wire is 10 Omega. If the resistiv...

    Text Solution

    |

  15. Three resistors of 5 Omega, 10 Omega and 15 Omega are connected in ser...

    Text Solution

    |

  16. Find out the reading of ammeter and voltmeter In the circuit given bel...

    Text Solution

    |

  17. Draw schematic diagram of a circuit consuting of a battery of five 2V ...

    Text Solution

    |

  18. An electric bulb is rated at 60W, 240V. Calculate its resistance. lf t...

    Text Solution

    |