Home
Class 12
PHYSICS
A circular coil of radius a and having N...

A circular coil of radius a and having N turns is placed at centre of a long solenoid, coaxially. The solenoid has radius b (`b gtgt a`) and number of turns per unit length is n. Their coefficient of mutual inductance will be -

A

`mu_(0)nN^(2)pia^(2)`

B

`mu_(0)nNpia^(2)`

C

`mu_(0)n^(2)Npia^(2)`

D

`mu_(0)n^(2)N^(2)pia^(2)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-4 (LEVEL-II)|13 Videos

  • ELECTRONICS - SEMI CONDUCTOR

    MOTION|Exercise EXERCISE - 3|29 Videos

Similar Questions

Explore conceptually related problems

A long solenoid has a radius a and number of turns per unit length is n . If it carries a current i, then the magnetic field on its axis is directly proportional to

The magnetic field B inside a long solenoid, carrying a current of 5.00 A, is (3.14 xx 10^-2) T. Find the number of turns per unit length of the solenoid.

If the number of turns per units length of a coils of solenoid is doubled , the self- inductance of the soleniod will

A long slenoid of radius 2 cm has 100 turns/cm and carries a current of 5A. A coil of radus 1 cm having 100 turns and a total resistance of 20 Omega is placed inside the solenoid coxially. The coil is conneted to a galvanometer. If the current in the solenoid is reversed in direction, find the charge flown through the galvanometer.

MOTION-ELECTROMAGNETISM-Exercise
  1. A conducting square loop edge length a and resistance R is in a unifor...

    Text Solution

    |

  2. A wire is in the form of a semicircle of radius r. One end is attached...

    Text Solution

    |

  3. A circular coil of radius a and having N turns is placed at centre of ...

    Text Solution

    |

  4. In the circuit shown in fig.. Time constant and steady state current w...

    Text Solution

    |

  5. Through an induction coil of L = 0.2 H, an a.c. current of 2A is passe...

    Text Solution

    |

  6. When the current in a coil charges from 2A to 4A in 0.05 s, emf of 8 v...

    Text Solution

    |

  7. When the current in a coil charges from 2A to 4A in 0.05 s, emf of 8 v...

    Text Solution

    |

  8. A coil having inductance and L and resistance R is connected to a batt...

    Text Solution

    |

  9. Two circular, similar, coaxial loops carry equal currents in the same...

    Text Solution

    |

  10. A solenoid of inductance 50 mH and resistance 10 Omega is connected ...

    Text Solution

    |

  11. A conductor rod AB moves parallel to X-axis in a uniform magnetic fiel...

    Text Solution

    |

  12. 5.5 × 10^(-4) magnetic flux lines are passing through a coil of resist...

    Text Solution

    |

  13. The electric current in a circuit is given by I = i0 (t/(tau)) for som...

    Text Solution

    |

  14. A series AC circuit has a resistance of 4omega and an inductor of reac...

    Text Solution

    |

  15. An inductor (L) and resistance (R) are connected in series with an AC ...

    Text Solution

    |

  16. In an LR-circuit, the inductive reactance is equal to the resistance R...

    Text Solution

    |

  17. The voltage of an AC source varies with time according to the relation...

    Text Solution

    |

  18. A generator of 100 V (rms) is connected in an ac circuit and 1 A (rms)...

    Text Solution

    |

  19. In ac circuit contains a pure capacitor, across which an ac emf e = ...

    Text Solution

    |

  20. An ac circuit contains a resistance R and a reactance X. If the impeda...

    Text Solution

    |