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

The two rails of a railway track separated by 1 metre and insulated from each other, are connected to a millivolmeter. What is the reading of the millivoltmeter when a train passes at a speed of `180 km//hour` along the track? [The vertical component of earth's magnetic field is `2.0 xx 10^(-4) Wb//m^(2)]`.

A

1 volt

B

100 mV

C

1 mV

D

10 mV

Text Solution

Verified by Experts

The correct Answer is:
C
` e=B_(v)lv=0.2xx10^(-4)xx1xx180xx5/18=1 mV`
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 16|30 Videos

  • ELASTICITY

    MARVEL PUBLICATION|Exercise Test Your Grasp - 5|15 Videos

  • ELECTRONS AND PHOTONS

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 17|15 Videos

Similar Questions

Explore conceptually related problems

The two rails of a railway track, insulated from each other and the ground, are connected to a milli voltmeter. What is the reading of the milli voltmeter when a train travels at a speed of 180 km//hours along the track, given that the vertical components of earth's magnitic field is 0.2xx10^(_4) weber//m^(2) & the rails are separated by 1 meter?

The two rails of a railway track insulated from each other and the ground are connected to a millivoltmeter. What will be the reading of the millivoltmeter, when a train travels at a speed of 180 km/h along the track? Given that the vertical component of Earth's field is 2 xx 10^(-5) Wb//m^(2) and the rails are separated by 1 m.

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

Two rail tracks, insulated from each other and the ground, are connected to milli voltmeter. What is the reading of the milli voltmeter when a train passes at a speed of 180 km/hr along the track ? Given that – the horizontal component of earth’s magnetic field B_(H) is 0.2 xx 10–4 Wb// m^(2) and rails are separated by 1 metre.

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 X 10^(-4) and the rails are separted by 1m.

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 )

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) .

A milliivoltmere is conneceted between the rails of a truck . Calcuate the voltmeter reading when a train pases at 600 km per hours . The vertical component of the earth's field is 2 xx 10^(-5) tesla and the distance between the rails is 1.5 m.

The rails ofa railway track are I.Sm apart and assumed to be insulated from one another. Calculate the EMF that will exist between the rails if a train is passing at 100 km/hr. Assume the horizontal component of earth's magnetic field is 0.36xx10^(-4)T and tan theta=1.036 where theta is the angle of dip.

MARVEL PUBLICATION-ELECTROMAGNETIC INDUCTION AND ALTERNATING CURRENTS -TEST YOUR GRASP - 16
  1. The two rails of a railway track separated by 1 metre and insulated fr...

    Text Solution

    |

  2. A coil having an area of 2m^(2) is placed in a magnetic field which ch...

    Text Solution

    |

  3. A straight conductor of length 2 is moves a velocity of 2 m//s, in a m...

    Text Solution

    |

  4. The magnetic flux passing perpendicular to the plane of a coil given b...

    Text Solution

    |

  5. Two identical circular loops of metal wire are lying on a table withou...

    Text Solution

    |

  6. A telegraph wire of length 2500m, is kept in E-W direction, at a heigh...

    Text Solution

    |

  7. When the current in a coil changes from 2A to 4A in 0.05 sec, the e.m....

    Text Solution

    |

  8. Two coil A and B are placed in a circuit. When current changes by 8 Am...

    Text Solution

    |

  9. Two coils P and S have a mutual inductance of 5 xx 10^(-3)H. If the cu...

    Text Solution

    |

  10. The primary and secondary voltage of an ideal step down transformer ar...

    Text Solution

    |

  11. A step down transformer has a turn ratio of 20 : 1. If 8 volt are deve...

    Text Solution

    |

  12. A step down transformer of efficiency 80% is used on a 1000V line to d...

    Text Solution

    |

  13. A coil 10 turns and area 10^(-2)m^(2) rotates in a magnetic field of 0...

    Text Solution

    |

  14. An alternating e.m.f. is given by E=10 cos omega t. If the frequency i...

    Text Solution

    |

  15. In an A.C. Circuit, the current is given by I=6 sin(200 pi t+(pi)/6)...

    Text Solution

    |

  16. An alternating e.m.f. given by e=200 sin 50 t is applied to a circuit ...

    Text Solution

    |

  17. An alternating voltage is represented by V=80 sin(100 pi t)cos(100 p...

    Text Solution

    |

  18. In an A.C. circuit, E=100 sin (500 t) volt and I=1000 sin(500 t +(pi)/...

    Text Solution

    |

  19. In an A.C. circuit, a resistance R=40 Omega and an inductance L are c...

    Text Solution

    |

  20. The inductance of a coil is 10 H. What is the ratio of its reactance w...

    Text Solution

    |

  21. For tuning radio and T.V. circuits, series resonance circuits are used...

    Text Solution

    |