Home
Class 10
PHYSICS
Commercial electric motors do not used:...

Commercial electric motors do not used:

A

An electromagnet to rotate the armature.

B

Effectively large on, of turns of conducting wire in the current
carrying coil

C

A permanent magnet to create the armature.

D

a soft iron core on which the coil is wound.

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • MAGNETIC EFFECTS OF ELECTRIC CURRENT

    MODERN PUBLICATION|Exercise EXERCISE|265 Videos

  • ELECTRICITY

    MODERN PUBLICATION|Exercise EXERCISE|303 Videos

  • REFLECTION AND REFRACTION

    MODERN PUBLICATION|Exercise EXAMPLE|138 Videos

Similar Questions

Explore conceptually related problems

A motor

What is an electric motor?

The cost of 2Rs/kWh of operating an electric motor for 10hours takes 10amp at 110V is:

Name some devices in which electric motors are used.

List some such electric applicances in which electric motor is used.

Name four appliances whereas an electric motor a rotating device that converts electrical energy to mechanical energy, is used as an important component. In what respect motors are different from generators?

Commercial pearl is formed by

MODERN PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT-EXERCISE
  1. For a current in a long straight solenoid N-and S-poles are created at...

    Text Solution

    |

  2. A uniform magnetic field exists in the plane of paper pointing from le...

    Text Solution

    |

  3. Commercial electric motors do not used:

    Text Solution

    |

  4. A constant current flows in a horizontal wire in the plane of the pape...

    Text Solution

    |

  5. The strength of magnetic field gets halved if the current flowing in a...

    Text Solution

    |

  6. In the arrangement shown in figure there are two coils wound on a non ...

    Text Solution

    |

  7. Choose the incorrect statement

    Text Solution

    |

  8. To convert an AC generator into DC generator

    Text Solution

    |

  9. The most important safety method used for protecting home appliances f...

    Text Solution

    |

  10. A high energy electron enters into a strong magnetic field which is pe...

    Text Solution

    |

  11. A rectangular coil of coper wire is rotated in a magnetic field. The d...

    Text Solution

    |

  12. Commercial electric motors do not used:

    Text Solution

    |

  13. A particle is moving towards east enters in a magnetic field directed ...

    Text Solution

    |

  14. A charged particle moves thorugh a uniform magnetic field perpendicula...

    Text Solution

    |

  15. The magnetic field lines inside a long current carrying solenoid are n...

    Text Solution

    |

  16. An AC generator is connected to an electrical appliances. In 10 revolu...

    Text Solution

    |

  17. An electron enters in a magnetic field at right angle to its shown in ...

    Text Solution

    |

  18. The magnetic field at the centre of a current carrying circular coil d...

    Text Solution

    |

  19. The direction of magnetic field at a point near a current carrying con...

    Text Solution

    |

  20. A dynamo

    Text Solution

    |