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7th Class Science Sample Paper Science Sample Paper - 6

  • question_answer
    Explain various steps involved in the formation of a plant seed starting from pollination.

    Answer:

    Electric circuit: The path along which an electric current can flow is called electric circuit. The components of an electric circuit are:
    (i) The cell or battery ? The source of electrical energy,
    (ii) The connecting wires or conductors,
    (iii) The bulb ? that uses the current,
    (iv) Switch ? to close or open the circuit.                                                      
    The simplified circuit diagram is given below with components and their symbols:


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