Home
Class 12
PHYSICS
When a magnet is heated, its strength –...

When a magnet is heated, its strength –

A

always decreases

B

always increases

C

may increase or decrease

D

remains unaffected

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELECTROMAGNETIC INDUCTION

    MOTION|Exercise EXERCISE-4 (LEVEL-II)|13 Videos
  • ELECTRONICS - SEMI CONDUCTOR

    MOTION|Exercise EXERCISE - 3|29 Videos

Similar Questions

Explore conceptually related problems

When ice water is heated, its density

When a semiconductor is heated, its resistance

When a magnetic substance is heated, then it

Both the poles of a magnet have the same strength

MOTION-ELECTROMAGNETISM-Exercise
  1. A magnetised wire of moment M is bent into an arc of a circle subtendi...

    Text Solution

    |

  2. Magnetic field produced by electrons in aotms and molecules is due to ...

    Text Solution

    |

  3. When a magnet is heated, its strength –

    Text Solution

    |

  4. The lines of forces due to earth's horizontal component of magnetic fi...

    Text Solution

    |

  5. A deflection magnetometer can be used for measuring –

    Text Solution

    |

  6. A line joining places of zero declination is called

    Text Solution

    |

  7. A hydrogen atom is a paramagnetic. A hydrogen molecule is –

    Text Solution

    |

  8. The core of electromagnet is made of soft iron because a) the susc...

    Text Solution

    |

  9. A permanent magnet –

    Text Solution

    |

  10. The relative permeability of a substance X is slightly less than unity...

    Text Solution

    |

  11. The variation of magnetic susceptibility (chi) with absolute temperatu...

    Text Solution

    |

  12. A conducting loop is pulled with a constant velocity towards a region ...

    Text Solution

    |

  13. A conducting loop of resistance R and radius r has its centre at the o...

    Text Solution

    |

  14. A small conducting circular ring of area 2 mm2 is placed coplanerly wi...

    Text Solution

    |

  15. A conducting square loop edge length a and resistance R is in a unifor...

    Text Solution

    |

  16. A wire is in the form of a semicircle of radius r. One end is attached...

    Text Solution

    |

  17. A circular coil of radius a and having N turns is placed at centre of ...

    Text Solution

    |

  18. In the circuit shown in fig.. Time constant and steady state current w...

    Text Solution

    |

  19. Through an induction coil of L = 0.2 H, an a.c. current of 2A is passe...

    Text Solution

    |

  20. When the current in a coil charges from 2A to 4A in 0.05 s, emf of 8 v...

    Text Solution

    |