Home
Class 12
PHYSICS
There are two batteries 'A' and 'B' havi...

There are two batteries `'A'` and `'B'` having same emf. A has no internal resistance and `B` has some internal restance. An inductance is connected first to `'A'` and the energy in the uniform magnetic field setup inside is `'U'`. It is now disconnected from `'A'` and reconnected to `'B'`. The energy stored in the uniform magnetic field will be

A

U

B

`gt U`

C

`lt U`

D

zero

Text Solution

Verified by Experts

The correct Answer is:
C
`U prop i^2`
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    NARAYNA|Exercise EXERCISE-2 (H.W)|16 Videos

  • ELECTROMAGNETIC INDUCTION

    NARAYNA|Exercise EXERCISE-3|24 Videos

  • ELECTROMAGNETIC INDUCTION

    NARAYNA|Exercise EXERCISE-1 (H.W)|43 Videos

  • ELECTRO MAGNETIC WAVES

    NARAYNA|Exercise LEVEL-II(H.W)|14 Videos

  • ELECTROMAGNETIC WAVES

    NARAYNA|Exercise EXERCISE -4|15 Videos

Similar Questions

Explore conceptually related problems

A conductor is moving with velocity v in a region of uniform magnetic field B.The electric field at P inside conductor is

Two batteries A and B whose emf is 2V are connected in series with external resistance R=1Omega . Internal resistance of battery A is 1.9Omega and that of B is 0.9 Omega .

An electron having mass 'm' and kinetic energy E enter in uniform magnetic field B perpendicularly, then its frequency will be : -

A coil of inductance 1.0 H and resistance 100 ohm is connected to a battery of emf 12 V. Find the energy stored in the magnetic field of the coil 10 ms after the circuit is switched on.

Two batteries one of the emf3V, internal resistance In and the other of emf l SV, internal resistance 2Omega are connected in series with a resistanceR as shown. If the potential difference between points a and b is zero, the resistance R is :

An inducatane L and a resistance R are connected in series with a battery of emf epsilon. Find the maximum rate at which the energy is stored in the magnetic field.

A metal rod of length I is moved with velocity v in a uniform magnetic field vec B . Emf is induced between the two ends of rod

NARAYNA-ELECTROMAGNETIC INDUCTION-EXERCISE-2 (C.W)
  1. Two parallel rails of a railway track insulated from each other and wi...

    Text Solution

    |

  2. A rod PQ is connected to the capacitor plates. The rod is placed in a ...

    Text Solution

    |

  3. A wire is sliding as shown in Figure. The angle between the accelerati...

    Text Solution

    |

  4. A conducting wire xy of lentgh l and mass m is sliding without frictio...

    Text Solution

    |

  5. A conducitng rod AB of length l = 1 m moving at a velcity v = 4 m//s m...

    Text Solution

    |

  6. A wire KMN moves along the bisector of the angle theta with a constant...

    Text Solution

    |

  7. A uniform magnetic field existsin region given by vec(B) = 3 hat(i) + ...

    Text Solution

    |

  8. A conducting rod PQ of length 1 m is moving with uniform velocity of 2...

    Text Solution

    |

  9. A time varying magnetic field is present in a cyclindrical region R as...

    Text Solution

    |

  10. A metallic square loop ABCD is moving in its own plane with velocity v...

    Text Solution

    |

  11. The flux linked with a coil is 0.8 Wb when a 2 A current is flowing th...

    Text Solution

    |

  12. A solenoid of self inductance 1.2 H is in series with a tangent galvan...

    Text Solution

    |

  13. There are two batteries 'A' and 'B' having same emf. A has no internal...

    Text Solution

    |

  14. An emf induced in a secondary coil is 10000 V when the current breaks ...

    Text Solution

    |

  15. A mutual inductor consists of two coils X and Y as shown in Fig. in wh...

    Text Solution

    |

  16. A long solenoid of length L, cross section A having N(1) turns has abo...

    Text Solution

    |

  17. A small coil of radius r is placed at the centre of a large coil of ra...

    Text Solution

    |

  18. The coefficient of mutual inductance of two circuits A and B is 3 mH a...

    Text Solution

    |

  19. Magnetic flux in a circular coil of resistance 10 Omega changes with t...

    Text Solution

    |

  20. Three coils are placed infront of each other as shown currents in 1 an...

    Text Solution

    |