Home
Class 12
PHYSICS
The current generator ig, shown in , se...

The current generator `i_g`, shown in , sends a constant current I through the circuit. The wire ab has a length l and mass m and can slide on the smooth, horizontal rails connected to `l_g`. The entire system lies in a vertical magnetic field B. Find velocity of the wire as a function of time.

Text Solution

Verified by Experts

Force on the wire `= ilB`,
`:. Accelecation `= (ilB)/m`
`:. Velocity = (ilBt)/m`
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    HC VERMA|Exercise EXERCISE|9 Videos

  • ELECTROMAGNETIC INDUCTION

    HC VERMA|Exercise Objective 2|10 Videos

  • ELECTRIC FIELD AND POTENTIAL

    HC VERMA|Exercise Exercises|75 Videos

  • ELECTROMAGNETIC WAVES

    HC VERMA|Exercise Exercises|9 Videos

Similar Questions

Explore conceptually related problems

A rod of mass m and resistance R slides smoothly over two parallel conducting wires kept sloping at an angle theta with respect to the horizontal as shown in figure. The circuit is closed through a perfect conductor at the top. There is a constant magnetic field vecB along the vertical direction. If the rod is initially at rest, find the velocity of the rod as a function of time.

A straight wire of mass 200 g and length 1.5 m carries a current of 2 A. It is suspended in mid-air by a uniform horizontal magnetic field B . What is the magnitude of the magnetic field?

As shown in the figure, a conducting rod of length I, mass m and resistance R falls through a magnetic field vecB in a plane perpendicular to plane of figure. Find terminal velocity of rod.

A straight wire of mass 200 g and length 1.5 m carries a current of 2 A. It is suspended in mid air by a uniform horizontal magnetic field B (figure). What is the magnitude of the magnetic field ?

A straight wire of mass 200g and length 1.5m carries a current of 2A. To suspend it in a air by a uniform horizontal magnetic field, value of required magnetic field is…. T

A constant current I flows in a horizontal wire in the plane of paper from east to west as shown in the following figure : At which poit will the direction of the magnetic field be from north to south ?

A circular coil having N turns is made from a wire L meter long. If a current of I ampere is passed through this coil suspended in a uniform magnetic field of B tesla, find the maximum torque that can act on this coil.

A solenoid 60 cm long and of radius 4.0 cm has 3 layers of windings of 300 turns each. A 2.0 cm long wire of mass 2.5 g lies inside the solenoid (near its centre) normal to its axis, both the wire and the axis of the solenoid are in the horizontal plane. The wire is connected through two leads parallel to the axis of the solenoid to an external battery which supplies a current of 6.0 A in the wire. What value of current (with appropriate sense of circulation) in the windings of the solenoid can support the weight of the wire?

Find the total momentum of electrons in a straight wire of length l = 1000 m carrying a current I=70 A .

HC VERMA-ELECTROMAGNETIC INDUCTION-Exercises
  1. Consider the situation shown in . The wire PQ has a negligible resist...

    Text Solution

    |

  2. The current generator I g, shown in . Sends a constant current I throu...

    Text Solution

    |

  3. The current generator ig, shown in , sends a constant current I throu...

    Text Solution

    |

  4. The system containing the rails and the wire of the previous problem i...

    Text Solution

    |

  5. The rectangualr wire- frame, shown in has a width d, mass m, resist...

    Text Solution

    |

  6. Shows a smooth pair of thick metallic rails connected across a battery...

    Text Solution

    |

  7. A conducting wire ab of length l, resistance r and mass m starts slidi...

    Text Solution

    |

  8. A bicycle is resting on its stand in the east - west direction and the...

    Text Solution

    |

  9. A conducting disc of radius r rotaes with a small but constant angul...

    Text Solution

    |

  10. shows a conducting disc rotating about its axis in a perpendicular ma...

    Text Solution

    |

  11. The magnetic field inn a region is given by vec B = (B0)/(L) y overse...

    Text Solution

    |

  12. shows a straight, long wire carrying a current I and a rod of length l...

    Text Solution

    |

  13. Consider a situation similar ot that of the previous problem except th...

    Text Solution

    |

  14. Shows a square frame of wire having a total resistance r placed coplan...

    Text Solution

    |

  15. A rectangular metallic loop of length l and width b is placed coplan...

    Text Solution

    |

  16. Shows a conducting circular loop of radius a placed in a uniform, perp...

    Text Solution

    |

  17. Consider the situation shown in the figure o fthe previous problem. Su...

    Text Solution

    |

  18. Consider a variation of the previous problem. Suppose the circular loo...

    Text Solution

    |

  19. Shows a situation similar to the previous problem. All parameters are...

    Text Solution

    |

  20. A wire of mass m and length l can slide freely on a pair of smooth, ve...

    Text Solution

    |