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    Physics
    Grade-7
    Easy

    Question

    It is a part of an electric bulb, and it glows when an electric current is switched on. It is

    1. A filament
    2. An element
    3. A-coil
    4. A bulb

    Hint:

    A filament

    The correct answer is: A filament

      Due to the heating effect of electric current, the bulb glows when the electric current passes through it. The filament of the bulb gets heated to a high temperature and it starts glowing.

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      Which of the following statements is correct about a switch?

      1. It allows the flow of electricity.
      2. It controls the power of the batteries.
      3. It fuses a bulb.
      4. It controls the brightness of a bulb.

      Which of the following statements is correct about a switch?

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      An electric bulb gives us light due to the ___________ effect of electric current.

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      DIRECTIONS: Based on the following diagram/picture, answer the questions given below: In the circuit diagram shown below, the bulb lights up when

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      The heating element is not a part of which one of the following electrical appliances?

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      2. Electric toaster
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      The filament of an electric bulb is made up of

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      3. Copper
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      DIRECTIONS: Match Column-I with Column-II and select the correct answer using the codes given below the columns.

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      How many bulbs are there in the given circuit diagram?

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