Home
Class 12
PHYSICS
Why are electromagnets made of soft iron...

Why are electromagnets made of soft iron?

A

hysteresis losses

B

eddy current losses

C

force opposing electric current

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • ELASTICITY

    NIKITA PUBLICATION|Exercise MCQ|314 Videos

  • ELECTRONS AND PHOTONS

    NIKITA PUBLICATION|Exercise MCQs|162 Videos

Similar Questions

Explore conceptually related problems

The core of electromagnet is made of soft iron because a) the susceptibility of soft iron is very high b) coercivity of soft iron is very low

Assertion: Electromagnets are made of soft iron. Reason: Coercivity of soft iron is small.

Electromagnets are made of soft iron because soft iron has

NIKITA PUBLICATION-ELECTROMAGNETIC INDUCTION-MCQs
  1. What is increase in step-down transformer?

    Text Solution

    |

  2. A device which converts low ac voltage at high current into high ac vo...

    Text Solution

    |

  3. Why are electromagnets made of soft iron?

    Text Solution

    |

  4. The transformation ratio in the step -up transformer is

    Text Solution

    |

  5. In a transformer 220 ac voltage is increased to 2200 volts. If the nu...

    Text Solution

    |

  6. The ratio of secondary to the primary turns in a transformer is 3:2. I...

    Text Solution

    |

  7. The primary winding of a transformer has 100 turns and its secondary w...

    Text Solution

    |

  8. A step-down transformer is connected to 2400 volts line and 80 amperes...

    Text Solution

    |

  9. A loss free transformer has 500 turns on its primary winding and 2500 ...

    Text Solution

    |

  10. An ideal transformer has 100 turns in the primary and 250 turns in the...

    Text Solution

    |

  11. The alternating voltage induced in the secondary coil of a transformer...

    Text Solution

    |

  12. We can reduce eddy currents in the core of transformer

    Text Solution

    |

  13. A 100% efficient transformer has 100 turns in the primary and 25 turns...

    Text Solution

    |

  14. The efficiency of transfomer is very high because

    Text Solution

    |

  15. In a lossless transformer an alternating current of 2 amp is flowing i...

    Text Solution

    |

  16. A transformer connected to 220 volt line shows an output of 2A at 1100...

    Text Solution

    |

  17. A power transformer is used to step up an alternating e.m.f. of 220 V ...

    Text Solution

    |

  18. A step up transformer connected to a 220V AC line is to supply 22 kV f...

    Text Solution

    |

  19. A transformer is employed to

    Text Solution

    |

  20. The number of turns in the primary coil of a transformer is 200 and th...

    Text Solution

    |