Home
Class 12
PHYSICS
Obtain the expression for the magnetic e...

Obtain the expression for the magnetic energy stored in a solenoid in terms of magnetic field B, area A and length l of the solenoid.

A

`(B^(2)AL)/(2mu_(0)^(2))`

B

`(AL)/(2mu_(0))`

C

`(1)/(2)mu_(0)B^(2)AL`

D

`(B^(2)AL)/(2mu_(0))`

Text Solution

Verified by Experts

The correct Answer is:
D
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    AAKASH INSTITUTE|Exercise ASSIGNMENT(SECTION - B) (OBJECTIVE TYPE QUESTIONS)|11 Videos

  • ELECTROMAGNETIC INDUCTION

    AAKASH INSTITUTE|Exercise ASSIGNMENT(SECTION -C) Previous Years Questions|23 Videos

  • ELECTROMAGNETIC INDUCTION

    AAKASH INSTITUTE|Exercise EXERCISE|17 Videos

  • ELECTRIC CHARGES AND FIELDS

    AAKASH INSTITUTE|Exercise SECTION -J(Aakash Challengers Questions)|5 Videos

  • ELECTROMAGNETIC WAVES

    AAKASH INSTITUTE|Exercise ASSIGNMENT SECTION - D Assertion-Reason Type Questions|25 Videos

Similar Questions

Explore conceptually related problems

Starting from the expression for the energy W=1 // 2 LI^(2) , stored in a solenoid of self-inductance L to build up the current I, obtain the expression for the magnetic energy in terms of the magnetic field B, area A and length l of the solenoid having n number of turns per unit length. Hence, show that the energy density is given by B^(2) // 2mu_(0) .

The magnetic field inside a solenoid is-

The magnetic field inside a solenoid is

Magnetic field lines inside a solenoid

AAKASH INSTITUTE-ELECTROMAGNETIC INDUCTION-ASSIGNMENT(SECTION - A) (OBJECTIVE TYPE QUESTIONS)
  1. A metallic ring with a small cut is held horizontally and a magnet is ...

    Text Solution

    |

  2. A loop of Irregular shape made of flexible conducting wire carrying cl...

    Text Solution

    |

  3. A copper rod of length l is rotated about one end perpendicular to the...

    Text Solution

    |

  4. A coil of cross-sectional area A having n turns is placed in uniform m...

    Text Solution

    |

  5. A flat coil of 500 turns each of area 50 cm^(2) rotates in a uniform m...

    Text Solution

    |

  6. Eddy currents are produced when

    Text Solution

    |

  7. A motor starter

    Text Solution

    |

  8. A simple electric motor has an armature resistance of 1Omega and runs ...

    Text Solution

    |

  9. Which of the following is possible application of an RC circuit?

    Text Solution

    |

  10. The current passing through a choke coil of self inductance 5 H is dec...

    Text Solution

    |

  11. When the number of turns in a coil is doubled without any change in th...

    Text Solution

    |

  12. A coil of resistance 10Omega and an inductance 5H is connected to a 10...

    Text Solution

    |

  13. Obtain the expression for the magnetic energy stored in a solenoid in ...

    Text Solution

    |

  14. An inductor is connected to a direct voltage source through a switch. ...

    Text Solution

    |

  15. A long solenoid has self inductance. L. If its length is doubled keepi...

    Text Solution

    |

  16. If L and R denote inductance and resistance respectively, then the dim...

    Text Solution

    |

  17. A solenoid of 2000 turns is wound over a length of 0.3 m. The area aof...

    Text Solution

    |

  18. With the decrease of current in the primary coil from 2 amperes to zer...

    Text Solution

    |

  19. Two coaxial coils are very close to each other and their mutual induct...

    Text Solution

    |

  20. The coefficients of self induction of two inductance coil are 0.01 H a...

    Text Solution

    |