Home
Class 12
PHYSICS
Consider a tightly wound 200 turn coil o...

Consider a tightly wound 200 turn coil of radius 20 cm, carrying a current of 1A. What is the magnitude of the magnetic field at the centre of the coil ?

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
D
If radius of cylindrical conductor is R then magnetic field at distance d from the axis,
`B=(mu_(0)id)/(2piR^(2)),dleRandB=(mu_(0)i)/(2pid),dgtR`
Promotional Banner

Topper's Solved these Questions

  • MOVING CHARGES AND MAGNETISM

    KUMAR PRAKASHAN|Exercise SECTION D (MULTIPLE CHOICE QUESTIONS)|108 Videos

  • MAGNETISM AND MATTER

    KUMAR PRAKASHAN|Exercise SECTION D Multiple Choice Questions (MCQs) (MCQs asked in Competitive Exams) MCQs asked in Board Exam and GUJCET|7 Videos

  • RAY OPTICS AND OPTICAL INSTRUMENTS

    KUMAR PRAKASHAN|Exercise SECTION-D (MULTIPLE CHOICE QUESTIONS (MCQs))(MCQs ASKED IN COMPETITIVE EXAMS)|142 Videos
KUMAR PRAKASHAN-MOVING CHARGES AND MAGNETISM-SECTION D (MCQs ASKED IN COMPETITIVE EXAMS)
  1. A metallic rod of mass per unit length 0.5kgm^(-1) is lying horizontal...

    Text Solution

    |

  2. Current sensitivity of a moving coil galvanometer is 5 div/mA and its ...

    Text Solution

    |

  3. Consider a tightly wound 200 turn coil of radius 20 cm, carrying a cur...

    Text Solution

    |

  4. Ionized hydrogen atoms and alpha-particles with same momenta enters pe...

    Text Solution

    |

  5. The effective length of a magnet is 31.4 cm and its pole strength is 0...

    Text Solution

    |

  6. Equal currents are passing through two very long and straight parallel...

    Text Solution

    |

  7. A galvanometer of resistance 50Omega is connecter to a battery of 8 V ...

    Text Solution

    |

  8. Equal currents are passing through two very long and straight parallel...

    Text Solution

    |

  9. An alpha particle of mass m moves on a circular path of radius r in a ...

    Text Solution

    |

  10. A long straight wire in the horizontal plane carries a current of 50 A...

    Text Solution

    |

  11. A proton is moving perpendicular to a uniform magnetic field of 2.5 te...

    Text Solution

    |

  12. A particle of mass m and charge q is incident on xz plane with velocit...

    Text Solution

    |

  13. An electron having mass 9.1xx10^(-31)kg, charge 1.6xx10^(-19)C and mov...

    Text Solution

    |

  14. Two parallel very long straight wires carrying current of 5A each are ...

    Text Solution

    |

  15. A very long straight wire of radius r carries current I. Intensity of ...

    Text Solution

    |

  16. The dimensional formula of effective torsional constant of spring is ...

    Text Solution

    |

  17. There are 50 turns per cm length in a very long solenoid. It carries a...

    Text Solution

    |

  18. The gyromagnetic of an electron = specific charge of an electron.

    Text Solution

    |

  19. A straight wire of mass 200g and length 1.5m carries a current of 2A. ...

    Text Solution

    |

  20. Unit of Bohr magneton is …..

    Text Solution

    |