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Electric wires are covered with rubber l...

Electric wires are covered with rubber like material.

Text Solution

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i.Electric wires that carry current are made up of metals like copper which are good conductors of electricity.
ii. These wires are coated with PVC or a rubber like material which are bad conductors of electricity.
iii. This is because if a person accidentally touches the wire then this coating prevents the current from passing through the person's body.
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Martin is constructing an electrical circuit. He notices that all electrical metal wires are covered with plastic. Electrical metal wires are covered with plastic because plastics are good

Martin is constructing an electrical circuit. He notices that all electrical metal wires are covered with plastic. Electrical metal wires are covered because plastics are good

Knowledge Check

  • Assertion : The electrical wires are covered with plastic and rubber like materials . Reason : Insulators do not allow the flow of current through them .

    A
    If both assertion and reason are true and reason is the correct explanation of assertion .
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion .
    C
    If assertion is true reason is false .
    D
    If assertion is false but reason is true .

  • There is a variety of materials that are used to make components of electrical circuits . These materials have good electrical conductivity . Ispite of having the largest conducivity among metals , silver is not used to make electric wires . Aluminium copper and are generally used to make electic wires .Not only conductors , insulators are alos important .the electrical wires are covered with plastic and rubber like materials . This is used to prevent short circuit and also to protect the user . What kind of materials are used to make electrical wires in an electric circuit ?

    A
    Insulators
    B
    Conductors
    C
    Electrolytes
    D
    All of these

  • There is a variety of materials that are used to make components of electrical circuits . These materials have good electrical conductivity . Ispite of having the largest conducivity among metals , silver is not used to make electric wires . Aluminium copper and are generally used to make electic wires .Not only conductors , insulators are alos important .the electrical wires are covered with plastic and rubber like materials . This is used to prevent short circuit and also to protect the user . Insulation is used in electric wire to prevent from

    A
    a short circuit
    B
    electric shock
    C
    fuse
    D
    both (a) and (b)

    • Similar Questions

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    Can the electric wires at home be covered with aluminium foil instead of plastic ?

    State the property utilized in the following: (a) Graphite is used in making electrodes. (b) Electrical wires are coated with polyvinyl chloride (PVC) or a rubber-like material.

    State the property utilized in the following : (i) Graphite in making electrodes. (ii) Electric wires are coated with polyvinyl chloride (PVC) or a rubber like material. (iii) Metal alloys are used for making bells and strings of musical instruments.

    Why are electric wires covered with plastics ?

    Why are handles of electrical tools coated or covered with insulating materials?

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