Home
Class 12
PHYSICS
Two copper wires have a ratio of 1:4 bet...

Two copper wires have a ratio of `1:4` between their diameters. IF the same current passes through both of them, the drift velocity of the electrons will be in the ratio of

A

`16:1`

B

`4:1`

C

`1:4`

D

`1:16`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • CURRENT ELECTRICITY

    CHHAYA PUBLICATION|Exercise EXERCISE ( VERY SHORT ANSWER TYPE QUESTION)|44 Videos

  • CURRENT ELECTRICITY

    CHHAYA PUBLICATION|Exercise EXERCISE ( SHORT ANSWER TYPE QUESTION-I)|23 Videos

  • CURRENT ELECTRICITY

    CHHAYA PUBLICATION|Exercise NCERT EXEMPLAR QUESTION WITH ANSWER HINT(MCQ-2)|1 Videos

  • COMMUNICATION STSTEM

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|28 Videos

  • DIFFRACTION AND POLARISATION OF LIGHT

    CHHAYA PUBLICATION|Exercise CBSE SCANNER|27 Videos

Similar Questions

Explore conceptually related problems

Statement I: The drift velocity of free electrons is v_d when a current l passes through a copper wire. The drift velocity is halved when the same current passes through another copper wire of double the diameter. Statement II: For the same current, the drift velocity of free electrons in a metal wire is inversely proportional to the area of cross section of the wire.

Two moving electrons have a ratio of 1 : 2 between their respective kinetic energies. The ratio between their de Broglie wavelength is

Two wires of the same radius material have lengths in the ratio 1:2. If these are stretched by the same force the strain produced in the two cases will be in the ratio

Two long straight conducting wires ara kept parallel to each other at a distance r apart. When a current I passes through both the wires in the same direction, a force of attraction vecF acts between the wires. Which of the following statement is/are true?

If a current passes through a metal conducting wire of area of cross section A, the drift velocity of free electrons inside the metal is v_d=1/( n e A) , where the amount of electric charge of an electron =e and the number of free electrons per unit volume of the metal=n. The applied electric field on the wire is E=V/l , where a potential difference V exists between two points, l apart, along the length of the wire. IF R is the resistance of the wire between those two points, then the resistivity of its material is rho=(RA)/l .Besides the mobility (mu) of the free electrons inside a wire is defined as their drift velocity for a unit applied electric field. Two copper wires have both lengths and radii in the ratio 1:2 if the ratio between the electric currents flowing through them is also 1:2 , what would be the ratio between the drift velocities of free electrons?

When a current of 1 A flows through a copper wire of cross sectional area 1mm^2 the drift velocity of free electrons becomes v, What will be the drift velocity of free electrons when the same current flows through a copper wire of cross sectional area 2mm^2 ?

The lengths of two wires made of the same material are in the ratio 2 : 3 . Their diameters are equal and the fundamental of the shorter wire is one octave higher than of the longer wire. Find the ratio between the tensions in the two wires.

CHHAYA PUBLICATION-CURRENT ELECTRICITY -EXERCISE ( MULTIPLE CHOICE QUESTION)
  1. The resistance of a wire is 5 Omega at 50^@C and 6 Omega at 100^@C . T...

    Text Solution

    |

  2. If three resistances connected in series,are related as R1 gt R2 gt R3...

    Text Solution

    |

  3. IF three resistances are connected in parallel and the relation betwee...

    Text Solution

    |

  4. Two resistances of 6 Omega and 3 Omega are connected in parallel and t...

    Text Solution

    |

  5. A series combination of three resistances 1 Omega, 2 Omega and 3 Omega...

    Text Solution

    |

  6. A uniform metal wire of resistance R is stretched to twice its length....

    Text Solution

    |

  7. A set of n identical resistors,each of resistance R ohm when connected...

    Text Solution

    |

  8. An uniform wire of resistance 36 Omega is bent in the form of a circle...

    Text Solution

    |

  9. A ring is made of a wire having a resistance R0=12 Omega. Find the poi...

    Text Solution

    |

  10. When a resistance of 12 Omega is conencted with a cell of emf 1.5 V,0....

    Text Solution

    |

  11. When a resistance of 12 Omega is conencted with a cell of emf 1.5 V,0....

    Text Solution

    |

  12. A shunt of resistance 1 Omega is connected with a galvanometer of resi...

    Text Solution

    |

  13. A galvanometer of resistance R is connected to an electric circuit. Th...

    Text Solution

    |

  14. Two electric cells each of emf 1.5 V and internal resistance 2 Omega a...

    Text Solution

    |

  15. n identical cells, each of emf e and internal resistance r, are first ...

    Text Solution

    |

  16. Two cells each emf e but of internal resistance r1 and r2 are connecte...

    Text Solution

    |

  17. A galvanometer connected with an unknown resistor and two identical ce...

    Text Solution

    |

  18. In a metallic conductor, the number of free electrons per unit volume ...

    Text Solution

    |

  19. When a current of 1 A flows through a copper wire of cross sectional a...

    Text Solution

    |

  20. Two copper wires have a ratio of 1:4 between their diameters. IF the s...

    Text Solution

    |