Home
Class 12
PHYSICS
A cylinder conductor AB of non uniform a...

A cylinder conductor AB of non uniform area of cross-section carries a current of 5A. The radius of the conductor at one end A is 0.5 cm.The current density at the other end of the conductor is half of the value at A. The radius of the conductor at the end B is nearly

A

1.4 cm

B

0.7 cm

C

0.6cm

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Given ,`J_(B)=(JA)/(2)
Promotional Banner

Topper's Solved these Questions

  • SOLVED PAPER 2017

    DC PANDEY|Exercise Solved papers 2017(JIPMER)|32 Videos

  • SOLVED PAPER 2017

    DC PANDEY|Exercise Solved papers 2017(JIPMER)|32 Videos

  • SEMICONDUCTORS

    DC PANDEY|Exercise Subjective|12 Videos

  • SOLVED PAPERS 2018

    DC PANDEY|Exercise JIPMER|22 Videos

Similar Questions

Explore conceptually related problems

A current of 0.2 A flows through a conductor of resistance 4.5 Omega . Calculate the potential difference at the ends of the conductor.

When charges are moving from one end to the other end of a conductor, we say there is "_______" in the conductor.

A straight conductor of uniform cross-section carries a current I . Let s= specific charge of an electron. The momentum of all the free electrons per unit length of the conductor, due to their drift velocity only, is

A conductor of length l and area of cross-section A has n number of electrons per unit volume of the conductor. The current flowing through conductor in time t is given by

A conductor-carries a current of 50 muA If the area of cross-section of the conductor is 50 mm^(2) , then value of the current density in Amis

A steady current flows in a metallic conductor of non-uniform cross section. Are current and current density constant along the conductor?

DC PANDEY-SOLVED PAPER 2017-Solved papers 2017(AIIMS)
  1. In the given figure,the angle of reflection is

    Text Solution

    |

  2. The current of transistor in common emitter mode is 49. The change in ...

    Text Solution

    |

  3. A cylinder conductor AB of non uniform area of cross-section carries ...

    Text Solution

    |

  4. A nuclear explosion is designed to deliver 1 MW of heat energy, how ma...

    Text Solution

    |

  5. A thin prism P with angle 4^(@) and made from glass of refractive inde...

    Text Solution

    |

  6. The effective resistance between p and q in given figure is

    Text Solution

    |

  7. Charges +q and -q are placed at points A and B respectively which are ...

    Text Solution

    |

  8. In the given figure ,C is middle point of line S(1)S(2).A monochromati...

    Text Solution

    |

  9. A simple telescope, consisting of an objective of focal length 60 cm a...

    Text Solution

    |

  10. A Specimen of silicon is to be made P-type semiconductor for this one ...

    Text Solution

    |

  11. The angle of dip if dip needleoscillating in vertical plane makes 40 ...

    Text Solution

    |

  12. Two batteries, one of emf 18V and internal resistance 2Omega and the o...

    Text Solution

    |

  13. The Young's experiment is performed with the lights of blue (lambda=43...

    Text Solution

    |

  14. Construct a proper combination of 3 NOT and one AND gates in order to ...

    Text Solution

    |

  15. Assertion A beam of charged particles is employed in the treatment of...

    Text Solution

    |

  16. Assertion In He-Nelaser, population inversion takes place between ener...

    Text Solution

    |

  17. Assertion The average value of alternating emf is 63.39% of the peak v...

    Text Solution

    |

  18. Assertion Photoelectric effect can take place only with an electron bo...

    Text Solution

    |

  19. Assertion: Cyclotron does not accelerate. Reason: Mass of the elect...

    Text Solution

    |

  20. Assertion: The electric field due to dipole on its axis line at a dist...

    Text Solution

    |