Home
Class 12
PHYSICS
A coil of self-inductance L is placed in...

A coil of self-inductance L is placed in an external magnetic field (no current flows in the coil). The total magnetic flux linked with the coil is `phi`. The magnetic field energy stored in the coil is

A

Zero

B

`(phi^(2))/(2L)`

C

`(phi^(2))/(L)`

D

`(2phi^(2))/(L)`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise EXERCISE-IB|18 Videos
  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise EXERCISE-II|32 Videos
  • ELECTROMAGNETIC INDUCTION

    AAKASH SERIES|Exercise Additional Exercise|11 Videos
  • ELECTRIC FIELD AND POTENTIAL

    AAKASH SERIES|Exercise PROBLEMS (LEVEL-II)|26 Videos
  • ELECTROMAGNETIC WAVES

    AAKASH SERIES|Exercise EXERCISE -II|22 Videos

Similar Questions

Explore conceptually related problems

In the figure magnetic energy stored in the coil is

The magnetic flux linked with a coil is phi and the emf induced in it is e .

A coil carrying electric current is placed in uniform magnetic field

1. A coil of area 2 cm^2 with turns 500 is placed in a magnetic field of 0.5 T with its plane parallel to field. The flux linked with the coil is

Magnetic Field due to Circular Coil

A coil of resistance 400Omega is placed in a magnetic field. If the magnetic flux phi (wb) linked with the coil varies with time t (sec) as f=50t^(2)+4 , the current in the coil at t=2 sec is

A coil of resistance 400Omega is placed in a magnetic field. If the magnetic flux phi (wb) linked with the coil varies with time t (sec) as f=50t^(2)+4 , the current in the coil at t=2 sec is

The magnetic field at the centre of the current carrying coil is

A coil of 100 turns and area 5 square centimetre is placed in a magnetic field B = 0.2 T . The normal to the plane of the coil makes an angle of 60^(@) with the direction of the magnetic field. The magnetic flux linked with the coil is

Two coils of self inductance L_1 and L_2 are placed near each other so that the total flux in one coil is partially linked with the other. Their mutual inductance (M) will be given by

AAKASH SERIES-ELECTROMAGNETIC INDUCTION-EXERCISE-IA
  1. A metallic ring is connected to a rod oscillates freely like a pendulu...

    Text Solution

    |

  2. Figure shows tow bulbs B(1) and B(2) resistor R and inductor L, when ...

    Text Solution

    |

  3. An inductor L, a resistanc eR and two identical bulbs B(1) and B(2) ar...

    Text Solution

    |

  4. If the number of turns per unit length of a coil of solenoid is double...

    Text Solution

    |

  5. A solenoid is connected to a battery so that a steady current flows th...

    Text Solution

    |

  6. A coil of self-inductance L is connected in series with a bulb B and a...

    Text Solution

    |

  7. The coefficient of mutual inductance of two coils depends on

    Text Solution

    |

  8. Two circular coils can be arranged in any of three situations as shown...

    Text Solution

    |

  9. When the plane of the armature of an ac. generator is parallel to the ...

    Text Solution

    |

  10. A coil of self-inductance L is placed in an external magnetic field (n...

    Text Solution

    |

  11. Switch S of the circuit shown in figure is closed at t = 0. If em...

    Text Solution

    |

  12. The magnetic energy stored in a long solenoid of area of cross-section...

    Text Solution

    |

  13. In an L-R circuit connected to a battery of constant emf E, switch is ...

    Text Solution

    |

  14. Two identical capacitors A and B are charged to the same potential and...

    Text Solution

    |

  15. Consider the situation shown in figure . If the switch is closed and a...

    Text Solution

    |

  16. In the pure inductive circuit, the curves between frequency f and reci...

    Text Solution

    |

  17. The heat developed in a system is proportional to the current through ...

    Text Solution

    |

  18. Match the items of column I with those of Column II and choose the cor...

    Text Solution

    |

  19. Consider the following statements A) If time constant is small the ...

    Text Solution

    |

  20. The switches in (a) and (b) are closed at t = 0 and re opened after a ...

    Text Solution

    |