Home
Class 12
PHYSICS
A long solenoid is formed by winding 20 ...

A long solenoid is formed by winding 20 turns/cm. The current necessary to produce a magnetic field of 20 millitesla inside the solenoid will be approximately
(`mu_0/(4pi)=10^(-7)` tesla-metre/ampere)

A

8.0 A

B

4.0 A

C

2.0 A

D

1.0 A

Text Solution

Verified by Experts

The correct Answer is:
A
`B=mu_0n_i`
Promotional Banner

Topper's Solved these Questions

  • NEET DRILL 3

    NEET MAJOR TEST (COACHING)|Exercise PHYSICS|45 Videos

  • NEET DRILL TEST 5

    NEET MAJOR TEST (COACHING)|Exercise PHYSICS|45 Videos

Similar Questions

Explore conceptually related problems

A long solenoid is formed by winding 20 turns cm^-1 . What current is necessary to produce a magnetic field of 20 mT inside the solenoid?

A long solenoid is formed by winding 40 turns//cm The current necessary for 40 mT inside the solenoid will be approximately equal to

A thin solenoid of length 0.4 m and having 500 turns of wire carries a current 1A ,then find the magnetic field on the axis inside the solenoid.

A solenoid 50 cm long has 4 layers of windings of 350 turns each. If the current carried is 6A. Find the magnetic field at the centre of the solenoid

A solenoid 50 cm long has 4 layers of windings of 350 turns each. If the current carried is 6 A, find the magnetic field at the centre of the solenoid.

A long solenoid has n turns per metre and current IA is flowing through it. The magnetic field induciton at the ends of the solenoid is

NEET MAJOR TEST (COACHING)-NEET DRILL 4 -PHYSICS
  1. A neutron breaks into a proton and electorn. Calculate the eenrgy prod...

    Text Solution

    |

  2. Electric field at a distance x from the origin is given as E =(100N-m^...

    Text Solution

    |

  3. A long solenoid is formed by winding 20 turns/cm. The current necessar...

    Text Solution

    |

  4. An inductance of 0.1 henry is connected with D.C. source of 120 volt. ...

    Text Solution

    |

  5. Unpolarized light of intensity l0 is incident on a set of 3 polaroids ...

    Text Solution

    |

  6. Let T be the mean life of a radioactive sample. 75% of the active nucl...

    Text Solution

    |

  7. Dimensions of a block are 1 cm xx 1cm xx 100cm. If specific resistance...

    Text Solution

    |

  8. A circular loop of radius r, carrying a current i, is placed in a radi...

    Text Solution

    |

  9. If a direct current of value a ampere is superimposed on an alternativ...

    Text Solution

    |

  10. Two identical metal plates show photoelectric effect. Light of wavelen...

    Text Solution

    |

  11. A parent nucleus .n^mP decays into a daughter nucleus D through alpha ...

    Text Solution

    |

  12. A cell of emf epsilon and internal resistance (r) is connected in seri...

    Text Solution

    |

  13. Two concentric coplanner coils of turns n1 and n2 have radii ratio 2 ...

    Text Solution

    |

  14. The resonant frequency of the L-C circuit is f0 before insertion of th...

    Text Solution

    |

  15. For intensity I of a light of wavelength 5000 Å the photoelectron satu...

    Text Solution

    |

  16. In a common emitter amplifier, using output reisistance of 5000 ohm an...

    Text Solution

    |

  17. AB is a potentiometer wire of length 100 cm and its resistance is 10 O...

    Text Solution

    |

  18. Our earth behaves as it has a powerful magnet within it. The value of ...

    Text Solution

    |

  19. A coil has a resistance of 10 Omega and an inductance of 0.4 henry. It...

    Text Solution

    |

  20. An electron of mass m when accelerated through a potential difference ...

    Text Solution

    |