Home
Class 12
PHYSICS
The two rails of a railway track, insul...

The two rails of a railway track, insulataed form each other and from the ground, are connected to a millivoltmeter. What will be the reading of the millivoltmeter when a train travels on the track at a speed of `180km h^(-1)?` The vertical component of earth's magnetic field is` 0.2 xx10^(-4)` and the rails are separted by 1m.

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    RESONANCE ENGLISH|Exercise Exercis-1 PART 2|51 Videos

  • ELECTROMAGNETIC INDUCTION

    RESONANCE ENGLISH|Exercise Exercis-2 PART 1|14 Videos

  • ELECTROMAGNETIC INDUCTION

    RESONANCE ENGLISH|Exercise Problem|12 Videos

  • ELECTRODYNAMICS

    RESONANCE ENGLISH|Exercise Advanced level problems|31 Videos

  • ELECTROSTATICS

    RESONANCE ENGLISH|Exercise HLP|40 Videos

Similar Questions

Explore conceptually related problems

Two rails of a railway track, insulated from each other and the ground, are connected to a millivoltmetre. What is the reading of the millivoltmetre when a train travels at a speed of 20 ms^(-1) along the track? Given that the vertical component of earth's magnetic field is 0.2xx10^(-4)"Wbm"^(-2) and the rails are separated by 1 m

The two rails, separated by 1m, of a railway track are connected to a voltmeter. What will be the reading of the voltmeter when a train travels on the rails with speed 5m/s. The earth's magnetic field at the place is 4xx10^(-4)T , and the angle of dip is 30^(º) .

Two parallel rails of a railway track insulated from each other and with the ground are connected to a millivoltmeter. The distance between the rails is one metre. A train is traveling with a velocity of 72 km ph along the track. The reading of the millivoltmetre (in m V ) is : (Vertical component of the earth's magnetic induction is 2 xx 10^(-5) T )

A horizontal straight wire 10m long extending from east to west is falling with a speed of 5.0m/s at right angles to the horizontal component of earths magnetic field 0.3 xx 10^(-4) tesla. The emf induced across the ends of wire is

An electron is moving vertically upwards in the uniform magnetic field of the earth. The velocity of the electron is 2.0 xx 10^(6) m/s and the horizontal component of the earth.s magnetic field is 0.32 xx 10^(-4)T. Obtain the magnitude and direction of the force on the electron.

A 10 m long horizontal wire extends from North east ro South East. It is falling with a speed of 5.0 ms^(-1) , at right angles to the horizontal component of the earth's magnetic field, of 0.3xx10^(-4)Wb//m^(2) . The value of the induced emf in wire is :

A 10 m long horizontal wire extends from North east ro South East. It is falling with a speed of 5.0 ms^(-1) , at right angles to the horizontal component of the earth's magnetic field, of 0.3xx10^(-4)Wb//m^(2) . The value of the induced emf in wire is :

A metal conductor of length 1 m rotates vertically about one of its ends at angular velocity 5 radians per second. If the horizontal component of earth's magnetic field is 0.2xx10^(-4)T , then the emf developed between the two ends of hte conductor is

An aeroplane in which the distance between the tips of wings is 50 m is flying horizontal with a speed of 360km//hr over a place where the verticle components of earth magnetic field is 2.0xx10^(-4)webr//m^(2) . The potential different between the tips of wings would be

The horizontal component of the earth's magnetic field at any place is 0.36 xx 10^(-4) Wb m^(-2) If the angle of dip at that place is 60 ^@ then the value of the vertical component of earth's magnetic field will be ( in Wb m^(-2))

RESONANCE ENGLISH-ELECTROMAGNETIC INDUCTION-Exercis-1
  1. A right angled triangle abc made of a metallic wire, moves at a unif...

    Text Solution

    |

  2. A metallic metre stick translates in a direction making an angle of 60...

    Text Solution

    |

  3. The two rails of a railway track, insulataed form each other and from...

    Text Solution

    |

  4. A circular copper ring of radius r translates in its plane with a cons...

    Text Solution

    |

  5. A wire bent as a parabola y=ax^(2) is located in a uniformed magnetic ...

    Text Solution

    |

  6. A square frame of wire abcd of side 1 m has a total resistance of 4 Om...

    Text Solution

    |

  7. Consider the situation shown in . The wire PQ has a negligible resist...

    Text Solution

    |

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

    Text Solution

    |

  9. Figure shows a wire of resistance R sliding on two parallel, conductin...

    Text Solution

    |

  10. shows a long U shaped wire of width l placed in a perpendicular magne...

    Text Solution

    |

  11. Consider the situation of the previous problem. The force on the centr...

    Text Solution

    |

  12. A wire of mass m and length l can slide freely on a pair of fixed, smo...

    Text Solution

    |

  13. Figure showns a fixed square frame of wire having a total resistance r...

    Text Solution

    |

  14. The magnetic field in a region is given by vecB=B(0)/Lxhatk where L is...

    Text Solution

    |

  15. A straight wire with a resistance of r per unit length is bent to form...

    Text Solution

    |

  16. A metal rod of length 15xx10^(-2)m rotates about an axis passing throu...

    Text Solution

    |

  17. In the figure there are two identical conducting rods each of length a...

    Text Solution

    |

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

    Text Solution

    |

  19. A simple pendulum with a bob of mass m and a conducting wire of length...

    Text Solution

    |

  20. A conducting disc of radius R is rolling without sliding on a horizont...

    Text Solution

    |