Home
Class 12
PHYSICS
A solenoid of inductance 2 H carries a ...

A solenoid of inductance 2 H carries a current of 1 A. What is the magnetic energy stored in a solenoid ?

A

4 J

B

2 J

C

5 J

D

1 J

Text Solution

Verified by Experts

The correct Answer is:
D
Here,
Inductance, `L=2` H, current, `I=1A`
Magnetic energy stored in the solenoid is
`U=1/2 LI^(2)=1/2xx2xx(1)^(2)=1J`
Promotional Banner

Topper's Solved these Questions

  • KARNATAKA CET 2013

    KCET PREVIOUS YEAR PAPERS|Exercise Physics|60 Videos

  • KARNATAKA CET 2015

    KCET PREVIOUS YEAR PAPERS|Exercise PHYSICS|60 Videos

Similar Questions

Explore conceptually related problems

A long solenoid with 40 turns per cm carries a current of 1A. The magnetic energy stored per unit volume is __________ J//m^(3)

A coil of self-inductance 2H is carrying a current of 2A. Calculate the energy stored in the coil.

A solenoid of length 0.5 m has a radius of 1 cm and is made up of 500 turns. It carries a current of 5 A. What is the magnitude of the magnetic field inside the solenoid?

The magnetic field inside the solenoid is

KCET PREVIOUS YEAR PAPERS-KARNATAKA CET 2014-PHYSICS
  1. A circular coil of radius 10 cm and 100 turns carries a current 1 A. W...

    Text Solution

    |

  2. A susceptibility of a certain magnetic material is 400. What is the cl...

    Text Solution

    |

  3. A solenoid of inductance 2 H carries a current of 1 A. What is the ma...

    Text Solution

    |

  4. A multimeter reads a voltage of a certain A.C. source as 100 V. What i...

    Text Solution

    |

  5. A series LCR circuit contains inductance 5 mH, capacitance 2 mu F and ...

    Text Solution

    |

  6. A step down transformer has 50 turns on secondary and 1000 turns on pr...

    Text Solution

    |

  7. The average power dissipated in A.C. circuit is 2 watt. If a current f...

    Text Solution

    |

  8. A plane electromagnetic wave of frequency 20 MHz travels through a spa...

    Text Solution

    |

  9. Two capacitors of 10 PF and 20 PF are connected to 200 V and 100 V sou...

    Text Solution

    |

  10. A physical quantity Q is found to depend on observables x, y and z, ob...

    Text Solution

    |

  11. Which of the following is not a vector quantity ?

    Text Solution

    |

  12. A car moves from A to B with a speed of 30 kmph and from B to A with ...

    Text Solution

    |

  13. A body starts from rest and moves with constant acceleration for t s. ...

    Text Solution

    |

  14. A person is driving a vehicle at uniform speed of 5 m s^(-1) on a le...

    Text Solution

    |

  15. A stone is thrown vertically at a speed of 30 ms^(-1) making an angle ...

    Text Solution

    |

  16. A force vec(F)=5 hat(i)+2hat(j)-5hat(k) acts on a particle whose posit...

    Text Solution

    |

  17. What is a period of revolution of earth satellite ? Ignore the height ...

    Text Solution

    |

  18. A period of geostationary satellite is

    Text Solution

    |

  19. What is the source temperature of the Carnot engine required to get 70...

    Text Solution

    |

  20. A 10 kg metal block is attached to a spring of spring constant 1000 N...

    Text Solution

    |