Home
Class 12
PHYSICS
A rod of certain metal is 1.0 m long and...

A rod of certain metal is `1.0 m` long and `0.6 cm` in diameter. Its resistance is `3.0 xx 10&(-3)` ohm. Another disc made of the same metal is `2.0 cm` in diameter and `1.0 mm` thick. What is the resistance between the round faces of the disc?

A

`1.35 xx 10^(-8)` ohm

B

`2.70 xx 10^(-7)` ohm

C

`4.05 xx 10^(-6)` ohm

D

`8.10 xx 10^(-5)` ohm

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    ERRORLESS |Exercise Kirchhoff s Law, cells|8 Videos

  • CURRENT ELECTRICITY

    ERRORLESS |Exercise Different Measuring Instruments|1 Videos

  • COMMUNICATION SYSTEM

    ERRORLESS |Exercise S E T|14 Videos

  • ELECTRO MAGNETIC INDUCTION

    ERRORLESS |Exercise SET|20 Videos

Similar Questions

Explore conceptually related problems

A wire 50 cm long and 0.12mm diameter has a resistance of 4.0 Omega find the resistance of another wire of the same material whose length is 1.5m and diameter is 0.15 mm

A wire 100cm long and 2.0mm diameter has a resistance of 0.7 ohm , the electrical resistivity of the material is

A wire 1.0 m long, 0.2 mm in diameter, has a resistance of 10 Omega . Calculate the resistivity of its material.

A 1m long wire of diameter 0.31mm has a resistance of 4.2 Omega . If it is replaced by another wire of same material of length 1.5m and diameter 0.155 mm , then the resistance of wire is

Calculate the resistivity of the material of a wire 1.0 m long, 0.4 mm diameter and having a resistance of 2.0 Omega .

Calculate the resistivity of the material of a wire 1.0 m lomg, 0.4 mm diameter and having a resistance of 2.0 ohm.

Calculate the resistivity of a material of a wire 10 m long, 0.4 mm in diameter and having a resistance of 2.0 Omega .

ERRORLESS -CURRENT ELECTRICITY-Self Evaluation Test -19
  1. A rod of certain metal is 1.0 m long and 0.6 cm in diameter. Its resis...

    Text Solution

    |

  2. Figure 6.51 shows a simple a potentiometer circuit for measuring a sma...

    Text Solution

    |

  3. A car has a fresh storage battery of emf 12 V and internal resistance ...

    Text Solution

    |

  4. If the balance point is obtained at the 35th cm in a metre bridge the ...

    Text Solution

    |

  5. The equivalent resistance across the terminals of source of e.m.f. 24 ...

    Text Solution

    |

  6. In the circuit shown in figure, switch S is initially closed and S i...

    Text Solution

    |

  7. The figure here shows a portion of a circuit. What are the magnitude a...

    Text Solution

    |

  8. A carbon resistor has colour strips as violet, yellow brown and golden...

    Text Solution

    |

  9. A voltmeter of resistance 1000 Omega is connected across a resistance ...

    Text Solution

    |

  10. A beam contains 2 xx 10^(8) doubly charged positive ions per cubic cen...

    Text Solution

    |

  11. In the circuit shown, the reading of ammeter when switch S is open ...

    Text Solution

    |

  12. In the circuit as shown in figure the

    Text Solution

    |

  13. In figure shows a rectangular block with dimensions x , 2 x and 4 x ....

    Text Solution

    |

  14. A battery is connected to a uniform resistance wire AB and B is eart...

    Text Solution

    |

  15. A cylindrical metal wire of length l and cross sections area S , has...

    Text Solution

    |

  16. A potential divider is used to give outputs of 4 V and 8 V from a 12 V...

    Text Solution

    |

  17. Find equivalent resistance between A and B

    Text Solution

    |

  18. Following figures show four situations in which positive and negative ...

    Text Solution

    |

  19. A and B are two square plates of same metal and same thickness but len...

    Text Solution

    |

  20. A moving coil galvanometer is converted into an ammeter reads upto 0.0...

    Text Solution

    |

  21. Two conductors are made of the same material and have the same length....

    Text Solution

    |