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Shalini and his brother Amey observed...

Shalini and his brother Amey observed a water-pump working , Shalini inquired how an electric motor works . Amey collected different parts of an electric motor e.g., field - magnets , cabon- brushes , armature , battery , switch, connecting wire , split - rings , etc, and showed them to Shalini . Amey then explained how an armature could rotate.
State the principle how an electric motor to works .

Text Solution

Verified by Experts

When a current -carrying coil is placed in a magnetic field, it experiences a force .
The direction of this force is found by using the Fleming.s left - hand rule .
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Shalini and his brother Amey observed a water-pump working , Shalini inquired how an electric motor works . Amey collected different parts of an electric motor e.g., field - magnets , cabon- brushes , armature , battery , switch, connecting wire , split - rings , etc, and showed them to Shalini . Amey then explained how an armature could rotate. Is an electric motor needed for water - pump to work ?

Shalini and his brother Amey observed a water-pump working , Shalini inquired how an electric motor works . Amey collected different parts of an electric motor e.g., field - magnets , cabon- brushes , armature , battery , switch, connecting wire , split - rings , etc, and showed them to Shalini . Amey then explained how an armature could rotate. What values do you learn from Amey.s activities ?

Knowledge Check

  • Working principle of electric motor is to convert …...

    A
    ac into dc.
    B
    ac into dc.
    C
    ac and dc mutually.
    D
    ac into mechanically.

  • On which principle does the electric generator work ?

    A
    Electrical energy is converted into heat .
    B
    Electrical energy is converted into heat
    C
    Mechanical energy is converted into electrical energy
    D
    Electrical energy is converted into light.

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    What is the role of the split rings in an electric motor ?

    What are the speical feature of a commerical electric motor ?

    State the principle on which the working of an electric generator is based .

    Name some devices in which electric motors are used .

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