Home
Class 12
PHYSICS
A metallic rod completes its circuit as ...

A metallic rod completes its circuit as shown in the figure. The circuit is normal to a magnetic field of `B=0.15` tesla. If the resistances of the rod is `3Omega` the force required to move the rod with a constant velocity of `2m//sec` is-

A

`3.75xx10^(-3)N`

B

`3.75xx10^(-2)N`

C

`3.75xx10^(2)N`

D

`3.75xx10^(-4)N`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTRO MAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-1|72 Videos
  • ELECTRO MAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-2 (Objective problems (Analytical questions))|70 Videos
  • ELECTRO MAGNETIC INDUCTION

    MOTION|Exercise QUESTIONS FOR PRACTICE (Type- IV: Questions based on induced Parameters :-)|10 Videos
  • Electrical Instrument

    MOTION|Exercise EXERCISE -3|16 Videos
  • ELECTRO MAGNETIC WAVES

    MOTION|Exercise EXERCISE - 3 (SECTION - B)|8 Videos

Similar Questions

Explore conceptually related problems

As shown in the figure a metal rod makes contact and complete the circuit. The circuite is perpendicular to the magnetic field with B=0.15 tesla. If the resistance is 3Omega force needed to move the rod as indicated with a constant speed of 2m//sec is

A 0.5m long metal rod PQ completes the circuit as shown in the figure. The area of the circuit is perpendicular to the magnetic field of flux density 0.15 T . If the resistance of the total circuit is 3Omega calculate the force needed to move the rod in the direction as indicated with a constant speed of 2 ms^(-1)

As shown in figure, a metal rod completes the circuit. The circuit area is perpendicular to a magnetic field with B = 0.15 T . If the resistance of the total circuit is 3 Omega , how large a force is needed to move the rod as indicated with a constant speed of 2 m/s?

A metal rod of length l cuts across a uniform magnetic field B with a velocity v. If the resistance of the circuit of which the rod forms a part is r, then the force required to move the rod is

A metallic rod of length L rotates at an angular speed omega, normal to a uniform magnetic field. If the resitance of rod is R the heat dissipated is:

A metallic rod of length l is rotated at a constant angular speed omega , normal to a uniform magnetic field B. Derive an expression for the current induced in the rod, if the resistance of the rod is R.

A conducting rod of length l is moving in a transverse magnetic field of strength B with veocity v. The resistance of the rod is R. The current in the rod is

Figure shows a conducting rod of negligible resistance that can slide on smooth U -shaped rail made of wire of resistance 1Omega//m .Position of the conducting rod at t=0 is shown.A time t dependent magnetic field B=2t Tesla is switched on at t=0 . Following situation of the previous question, the magnitude of the force required to move the conducting rod at constant speed 5cm//s at the same instant t=2s , is equal to

MOTION-ELECTRO MAGNETIC INDUCTION-QUESTION FOR PRACTICE
  1. If the current in a primary circuit is I=I(0) Sin omegat and the mutua...

    Text Solution

    |

  2. An a.c . Of 50 Hz and 1A peak value flows in primary coil transformer...

    Text Solution

    |

  3. The number of turns of primary and secondary coils of a transformer ar...

    Text Solution

    |

  4. A solenoid has 2000 turns wound over a length of 0.3 m. Its cross-sect...

    Text Solution

    |

  5. The conducting circular loops of radii R(1) and R(2) are placed in the...

    Text Solution

    |

  6. Find direction of instantaneous induced current in secondary circuit f...

    Text Solution

    |

  7. When straight conductor moves in external magnetic field (LHP rule):-

    Text Solution

    |

  8. When straight conductor moves in external magnetic field (LHP rule):-

    Text Solution

    |

  9. When straight conductor moves in external magnetic field (LHP rule):-

    Text Solution

    |

  10. When straight conductor moves in external magnetic field (LHP rule):-

    Text Solution

    |

  11. When straight conductor moves in external magnetic field (LHP rule):-

    Text Solution

    |

  12. When straight conductor moves in external magnetic field (LHP rule):-

    Text Solution

    |

  13. When straight conductor moves in external magnetic field (LHP rule):-

    Text Solution

    |

  14. A metallic rod completes its circuit as shown in the figure. The circu...

    Text Solution

    |

  15. A rectangular loop sides 10 cm and 3 cm moving out of a region of unif...

    Text Solution

    |

  16. A square metal wire loop of side 20 cm and resistance 2Omega is moved ...

    Text Solution

    |

  17. Figure shows a squre loop of side 5 cm being mo ved towards right at a...

    Text Solution

    |

  18. A conducting rod moves towards right with constant velocity v in unifr...

    Text Solution

    |

  19. A rectangular coil ABCD is rotated in uniform magnetic field with cons...

    Text Solution

    |

  20. A rectangular coil has 60 turns and its length and width is 20 cm and ...

    Text Solution

    |