10th Class Science Magnetic Effects of Electric Current

  • question_answer 63)
      What is the role of fuse, used in series with any electrical appliance ?Why should a fuse with defined rating not be replaced by one with a larger rating?

    Answer:

                      The main role of fuse used in series with any electrical appliance limits the current through the appliance. It protects the appliance due to short-circuiting or over / loading as when current exceeds the limit for which the fuse is rated, it blows off and the appliance is disconnected from the electric supply, When a fuse with defined rating for a particular appliance is replaced by one with larger rating, it does not blow off and the appliance is damaged due to larger current passing through it.


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