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Discussion :: Electronic Devices and Circuits

  1. An LED has a rating of 2 V and 10 mA. It is used along with 6V battery. The range of series resistance is

    2. A.
    0 to 200 Ω
    B.
    200 - 400 Ω
    C.
    200 Ω and above
    D.
    400 Ω and above

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    Answer : Option D

    Explanation :

    R = = 400Ω.

    R must be at least 400Ω so that current in LED does not exceed 10 mA.

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