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8th Class Science Chemical Effects of Electric Current Question Bank Chemical Effects of Electric Current

  • question_answer
    Which of the following circuits gives the correct way of connecting an LED to light it up?

    A)                                                                      

    B)                       

    C)                                                                               

    D)                                       

    Correct Answer: B

    Solution :

    An LED has two leads. One lead is slightly longer than the other. The longer lead is always connected to a positive terminal of the battery while the shorter lead is always connected to a negative terminal of the battery. In circuit (B) switch is present and is in its ON position. Only this makes the LED glow.


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