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  1. Working of safety fuses depends upon
    1. magnetic effect of the current
    2. chemical effect of the current
    3. magnitude of the current
    4. heating effect of the current
    Select the correct answer using the code given below.

    2. A.

     1, 2, 3 and 4
    B.

     1, 2 and 3 only
    C.

     3 and 4 only
    D.

     4 only

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    Answer : Option C

    Explanation :

    Working of safety fuses depends upon magnitude of the current and heating effect of the current.

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