Home
Class 12
PHYSICS
A metal rod of mass m can rotate about ...

A metal rod of mass `m` can rotate about a horizontal axis `O`, sliding along a circular conductor of radius `a` (fig). The arrangment is located in a unifrom magnetic field of induction `B` directed perpendicular to the ring plane. The axis and the ring are connected to an emf source to form a circuit of resistance `R`. Neglecting the friction, circuit induction and ring resistance, find the law according to which the source and must very to make the rod rotate with a constant angular velocity `omega`.

Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT

    PHYSICS GALAXY - ASHISH ARORA|Exercise Illustration|25 Videos

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT

    PHYSICS GALAXY - ASHISH ARORA|Exercise Practice Exercise 5.1|12 Videos

  • CURRENT ELECTRICITY

    PHYSICS GALAXY - ASHISH ARORA|Exercise All Questions|389 Videos

  • ELECTROSTATICS

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numberical Problems|73 Videos

Similar Questions

Explore conceptually related problems

A conducting ring is placed in a uniform magnetic field with its plane perpendicular to the field . An emf is induced in the ring if

A circular conducting ring of radius 'a' is rolling with slipping on a horizontal surface as shown. A uniform magnetic field B is existing perpendicular to the plane of motion of the ring. The emf iniduced between the points A and D of the ring is

A metal ring of radius r =0.5m with its plane noraml a unifrom magnetic field B of induction 0.2T carries a current I=100A The tension in newtons develoed in the ring is

A horizontal ring of radius r spins about its axis with an angular velocity omega in a uniform vertical magnetic field of magnitude B . The emf induced in the ring is

A conduting ring R is placed on the axis of a bar magnet M . The plane of R is perpendicular to this axis. M can move along this axis

A conducting ring R is placed on the axis of a bar magnet M. The plane of R is perpendicular to this axis, M can move along this axis.

A ring of radius R is rolling on a horizontal plane with constant velocity v. There is a constant and uniform magnetic field B which is perpendicular to the plane of the ring. Emf across the lowest point A and right-most point C as shown in the figure will

A thin non-conducting ring of mass m carrying a charge q can freely rotate about its axis. At t = 0 , the ring was at rest and no magnetic field was present. Then suddenly a magnetic field B was set perpendicular to the plane. Find the angular velocity acquired by the ring.

A semicircle conducting ring of radius R is placed in the xy plane, as shown in Fig. A uniform magnetic field is set up along the x-axis. No emf, will be induced in the ring if

PHYSICS GALAXY - ASHISH ARORA-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENT-Advance MCQs
  1. A metal rod of mass m can rotate about a horizontal axis O, sliding...

    Text Solution

    |

  2. A loop is kept so that its center lies at the origin of the coordinate...

    Text Solution

    |

  3. For a RLC series circuit , phasors of current i and applied voltage V=...

    Text Solution

    |

  4. Two different coils have self-inductances L(1) = 8 mH and L(2) = 2 mH....

    Text Solution

    |

  5. Mutual inductance of two coils can be increased by

    Text Solution

    |

  6. Which of the following statements is/are correct?

    Text Solution

    |

  7. The loop shown moves with a velocity v in a uniform magnetic field of ...

    Text Solution

    |

  8. In the following electrical network at t lt 0, key is placed on (1) ti...

    Text Solution

    |

  9. An infinitely longg wire is placed near a square loop as shown in figu...

    Text Solution

    |

  10. A circuit is set up by connecting L=100mH, C=5muF and R=100Omega in se...

    Text Solution

    |

  11. Choose the CORRECT statements:

    Text Solution

    |

  12. For an LCR series circuit with an aac source of angular frequency omeg...

    Text Solution

    |

  13. In the circuit shown in figure, circuit is closed at time t=0. At time...

    Text Solution

    |

  14. Choose the CORRECT statement(s) in the following:

    Text Solution

    |

  15. In the circuit shown in figure-5.318, if both the bulbs B(1) and B(2) ...

    Text Solution

    |

  16. Two circular coils are placed adjacent to each other. Their planes are...

    Text Solution

    |

  17. AB and CD are fixed conducting smooth rails placed in a vertical plane...

    Text Solution

    |

  18. A coil of area 2m^2 and resistane 4Omega is placed perpendicular to a ...

    Text Solution

    |

  19. A circuit consisting of a constant EMF E, a self-inductance L and a re...

    Text Solution

    |

  20. In LC oscillations of a capacitor with an initial charge q(0) is conne...

    Text Solution

    |

  21. A solenoid is connedted to a source of constant EMF for a long time. A...

    Text Solution

    |