Home
Class 12
PHYSICS
A vertical matallic pole falls down thro...

A vertical matallic pole falls down through the plane of magnetic meridian. Will any e.m.f. be induced between its ends ?

Text Solution

Verified by Experts

No emf will be induced as the vertical pole neither intercepts the horizontal component nor the vertical component of Earth.s magnetic field.
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    MODERN PUBLICATION|Exercise REVISION EXERCISE (Additional Questions (Carrying I mark))|11 Videos
  • ELECTROMAGNETIC INDUCTION

    MODERN PUBLICATION|Exercise REVISION EXERCISE (Fill in the blanks)|7 Videos
  • ELECTROMAGNETIC INDUCTION

    MODERN PUBLICATION|Exercise HIGHER ORDER THINKING SKILLS AND ADVANCED LEVEL|8 Videos
  • ELECTRIC CHARGES AND FIELDS

    MODERN PUBLICATION|Exercise Chapter Practice Test|15 Videos
  • ELECTROMAGNETIC WAVES

    MODERN PUBLICATION|Exercise CHAPTER PRACTICE TEST|14 Videos

Similar Questions

Explore conceptually related problems

A wheel with a certain number of spokes is rotated in plane normal to earth's magnetic field so the an e.m.f. is induced between the axle and rim of the wheel. Keeping all other things same, number of spokes is changed. How is the e.m.f. affected ?

A cycle wheel with 64 spokes is rotating with N rotations per second at right angles to horizontal component of magnetic field. The induced e.m.f generated between its axle and rim is E . If the number of spokes is reduced to 32 then the value of induced e.m.f. will be

A uniform circular metal disc of radius R is rotating about a vertical axis passing through its centre and perpendicular to its plane with constant frequency f. If B_(H) and B_(V) are horizontal and vertical components of the Earth's magnetic field respectively, then the induced e.m.f between its centre and the rim is

a semicircle wire of radius R is rotated with constant angular velocity about an axis passing through one end and perpendicular to the plane of wire. There is a uniform magnetic field of strength B . The induced emf between the ends is

A jet plane is travelling west at 450 m//s . If the horizontal component of earth's magnetic field at the place is 4 xx 10^(-4) T and the angle of dip is 30^(@) , find the e.m.f. induced between the ends of wings having a spam fo 30 m.

The true value of dip at a place is 45^@ . If the vertical plane carrying the needle is turned through 60^@ from the magnetic meridian, find the inclination of the needle (i.e. what will be the apparent value of dip)?

A vertical plane passing through the magnetic north and south pole of the earth is............

MODERN PUBLICATION-ELECTROMAGNETIC INDUCTION-REVISION EXERCISE (Very Short Answer Questions Carrying I mark)
  1. The induced e.m.f. is sometimes called back e.m.f. Why ?

    Text Solution

    |

  2. Does the change in magnetic flux always produce both emf and current?

    Text Solution

    |

  3. A vertical matallic pole falls down through the plane of magnetic meri...

    Text Solution

    |

  4. Two identical loops, one of copper and other of manganin, are removed ...

    Text Solution

    |

  5. What will be the magnitude of induced emf in a rectangular loop ABCD, ...

    Text Solution

    |

  6. Predict the polarity of the capacitor in the situation described below...

    Text Solution

    |

  7. Use Lenz's law to determine the direction of the induced current when ...

    Text Solution

    |

  8. The electric current flowing in a wire in the direction from B to A de...

    Text Solution

    |

  9. What do you mean by magnetic flux through a surface?

    Text Solution

    |

  10. A long straight current carrying wire passes normally through the c...

    Text Solution

    |

  11. What is the relation between weber and Maxwell ?

    Text Solution

    |

  12. Predict the direction of induced current in metal rings 1 and 2 when c...

    Text Solution

    |

  13. Volt-sec is the unit of which physical quantity?

    Text Solution

    |

  14. State Lenz's law of electromagnetic induction. The magnetic threading ...

    Text Solution

    |

  15. When the north pole of a magnet is moved away from a coil, what is the...

    Text Solution

    |

  16. Why a spark is produced in a switch sometimes when it is switched off?

    Text Solution

    |

  17. Derive the expression for motional emf induced in a conductor moving i...

    Text Solution

    |

  18. Define self-inductance of a coil. Obtain the expression for the energy...

    Text Solution

    |

  19. What is the power required to move a conductor of length l having resi...

    Text Solution

    |

  20. Can a moving bar magnet exert a force on a stationary charge? Explain.

    Text Solution

    |