Home
Class 12
PHYSICS
Two identical conductors P and Q are pla...

Two identical conductors P and Q are placed on two frictionless rails R and S in a uniform magnetic field directed into the plane. If P is moved in the direction shown in figure with a constant speed then rod Q

A

Will be attracted towards 'P'

B

Will be repelled away from 'P'

C

Will remain staionary

D

May be repelled (or) attracted towards 'P'

Text Solution

Verified by Experts

The correct Answer is:
A
From Lenz law, if one rod is moved away from the second rod then seconds rod will be attracted towards first due to motion of 'p' area under rectangle and hence flux increase. To oppose this area of rectangle should decrease. So 'Q' moves towards P
Promotional Banner

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

The counductor AD moves to the right in a uniform magnetic field directed into the plane of the paper.

Magnetic field in cylindrical region of radius R in inward direction is as shown in figure.

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. Calculate the torque due to the magnetic force on the rod, for an axis at P.

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?

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 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?

The loop shown moves with a velocity v in a uniform magnetic field of magnitude B , directed into the paper. The potential differene between point P and Q is e. Then

A conductor rod AB moves parallel to X-axis in a uniform magnetic field, pointing in the positive Z-direction. The end A of the rod gets-

A resistance R is connected between the two ends of the parallel smooth conducting rails.A conducting rod lies on these fixed horizontal rails and a uniform constant magnetic field B exists perpendicular to the plane of the rails as shown in the figure.If the rod is given a velocity v and released as shown in figure, it will stop after some time, which option are correct:

A conducting rod of length is moved at constant velocity v_(0) on two parallel, conducting, smooth, fixed rails, that are placed in a uniform constant magnetic field B perpendicular to the plane for the rails as shown in Fig. A resistance R is connected between the two ends of the rails. Then which of the following is/are correct:

A conducting rod of length is moved at constant velocity v_(0) on two parallel, conducting, smooth, fixed rails, that are placed in a uniform constant magnetic field B perpendicular to the plane for the rails as shown in Fig. A resistance R is connected between the two ends of the rails. Then which of the following is/are correct:

ALLEN-TEST PAPERS-part-2 physic
  1. In the shown diagram, all the wires are made up of same material, lent...

    Text Solution

    |

  2. A time varying uniform magnetic field passes through a circular region...

    Text Solution

    |

  3. Two identical conductors P and Q are placed on two frictionless rails ...

    Text Solution

    |

  4. A magnetic flux of 5xx10^(-1)wb is associated with every 10 turns of a...

    Text Solution

    |

  5. A coil has inductance of (11)/(5pi)H and is joined in series with a re...

    Text Solution

    |

  6. In the circuit shown below what will be the reading of the voltmeter a...

    Text Solution

    |

  7. Shown an object and its image formed by a thin lens. Then the nature a...

    Text Solution

    |

  8. A horizontal cylinderical tank (6)/(pi)m in diameter is half full of w...

    Text Solution

    |

  9. A container having two immiscible liquids of densities 'p' and '2p' mo...

    Text Solution

    |

  10. A non-viscous liquid of constant density 10^(3) kg // m^(3) flows in ...

    Text Solution

    |

  11. A uniform thin rod is bent in the form of closed loop ABCDEFA as shown...

    Text Solution

    |

  12. Find force F required to keep the system in equilibrium. The dimension...

    Text Solution

    |

  13. A solid homogeneous sphere is moving on a rough horizontal surface, pa...

    Text Solution

    |

  14. Two current carrying coil having radius 'r' are seperated by distance ...

    Text Solution

    |

  15. The magnetic field in a region is given by vec(B)=B(0)(1+(x)/(a))hat(k...

    Text Solution

    |

  16. In the circuit shown in Fig. Sliding contact is moving with uniform ve...

    Text Solution

    |

  17. A bulb of 100 W is connected in parallel to an ideal inductance of 1H....

    Text Solution

    |

  18. A ray of light is incident on the surface of a sphere of refractive in...

    Text Solution

    |

  19. A cylinder tank of base area A has a small hole of areal a at the bott...

    Text Solution

    |

  20. A ring of mass 'm' and radius 'r' carrying current i(0) is lying in t...

    Text Solution

    |