Home
Class 12
PHYSICS
A horizontal metallic rod of mass m and ...

A horizontal metallic rod of mass `m` and length `l` is supported by two vertical identical springs of spring constant `k` each and natral length `i_(0)` A current `l` is flowing in the rod in the direction shown if the rod is in equilibrium then the length of each spring in this state is:

A

`l_(0)+(ilB-mg)/(K)`

B

`l_(0)+(ilB-mg)/(2K)`

C

`l_(0)+(mg-ilB)/(2K)`

D

`l_(0)+(mg-ilB)/(k)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECTS OF CURRENT AND MAGNETISM

    PHYSICS GALAXY - ASHISH ARORA|Exercise Advance MCQ|29 Videos
  • MAGNETIC EFFECTS OF CURRENT AND MAGNETISM

    PHYSICS GALAXY - ASHISH ARORA|Exercise U.N.P|79 Videos
  • MAGNETIC EFFECTS OF CURRENT AND MAGNETISM

    PHYSICS GALAXY - ASHISH ARORA|Exercise Conceptual MCQ|37 Videos
  • Kinetic Theory of Gases and Gas Laws

    PHYSICS GALAXY - ASHISH ARORA|Exercise Unsolved Numerical Problems for Preparation of NSEP, INPhO & IPhO|64 Videos
  • NUCLEAR PHYSICS AND RADIOACTIVITY

    PHYSICS GALAXY - ASHISH ARORA|Exercise Concptual MCQs|48 Videos

Similar Questions

Explore conceptually related problems

A rod of mass M and length L is made to stand vertically. Potential energy of the rod in this position is

A rod of mass m and length l is connected by two spring of spring constants k_(1) and k_(2) , so that it is horizontal at equilibrium. What is the natural frequency of the system?

A ring of mass m is attached to a horizontal spring of spring constant k and natural length l_0 . The other end of the spring is fixed and the ring can slide on a horizontal rod as shown. Now the ring is shifted to position B and released Find the speed of the ring when the spring attains its natural length.

There are tow identical spring each of spring constant k. here springs, pulley and rods are massless and the block has mass m . What is the extension of each spring at equilibrium?

A metal wire of length L, area of cross-section A and Young's modulus Y behaves as a spring of spring constant k.

Two identical rods each of mass m and length are connected as shown. Locate c.m.

In the figure shown a uniform conducing rod of mass m and length l is suspended invertical plane by two conducing springs of spring constant k each. Upper end of springs are connected to each other by a capacitor of capacitance C. A uniform horizontal magnetic field (B_(0)) perpendicular to plane of springs in space initially rod is in equillibrium. If the rod is pulled down and released, it performs SHM. (Assume resistance of springs and rod are negligible) Find the period of oscillation of rod.

A thin, uniform rod with negligible mass and length 0.200m is attached to the floor by a frictionless hinge at point P (as shown in fig) A horizontal spring with force constant k=4.80Nm^-1 connects the other end of the rod to a vertical wall. The rod to a vertical wall. The rod is in a uniform magnetic field B=0.340T directed into the plane of the figure. There is current I=6.50 A in the rod, in the direction shown. When the rod is in equilibrium and makes an angle of 53.0^@ with the floor, is the spring stretched or compressed?

PHYSICS GALAXY - ASHISH ARORA-MAGNETIC EFFECTS OF CURRENT AND MAGNETISM-Numerical MCQ
  1. Let B(P) and B(Q) be the magnetic field produced by the wire P and Q w...

    Text Solution

    |

  2. A wire carrying a current of 3A is bent in the form of a parabola y^(2...

    Text Solution

    |

  3. A horizontal metallic rod of mass m and length l is supported by two v...

    Text Solution

    |

  4. A dip circle is adjusted so that its needle moves freely in the magnet...

    Text Solution

    |

  5. An infinite current carrying conductor is bent into three segments as ...

    Text Solution

    |

  6. A charged particle moving along +ve x-direction with a velocity v ente...

    Text Solution

    |

  7. If the magnetic field at P can be written as K tan (alpha/2),

    Text Solution

    |

  8. The value of horizontal component of earth's magnetic field at a place...

    Text Solution

    |

  9. A wire of mass 100kg is carrying a current of 2A towards increasing x ...

    Text Solution

    |

  10. A long straight wire along the z- axis carries a current I in the neg...

    Text Solution

    |

  11. A dip needle vibrates in the vertical plane perpendicular to the magne...

    Text Solution

    |

  12. A charged particle of mass m and charge q is accelerated through a pot...

    Text Solution

    |

  13. Two magnet of equal mass are joined at right angles to each other as s...

    Text Solution

    |

  14. The magnetic moment of a short magnet is 8 Am^(2). What is the magneti...

    Text Solution

    |

  15. A particle of charge -16xx10^(-18) coulomb moving with velocity 10 ms^...

    Text Solution

    |

  16. The moment of a short magnet is 4Am^(2) the magnetic induction at a po...

    Text Solution

    |

  17. An electron is projected with velocity v(0) in a unifrom electric fiel...

    Text Solution

    |

  18. Magnetic field strength due to a short bar magnet on its axial line at...

    Text Solution

    |

  19. In Fig. a coil of single turn is wound on a sphere of radius r and mas...

    Text Solution

    |

  20. If a magnet is suspended at an angle 30^(@) to the magnetic meridian a...

    Text Solution

    |