1.

Give explanations of the given statements:Fuse used in electrical circuit can save electrical objects from damage.

Answer»
  • Fuse wire is used to protect domestic appliances. 
  • It is made of a mixture of substances and has a specific melting point. 
  • It is connected in series to the electric appliances. If for some reason, the current in the circuit increases excessively, the fuse wire gets heated and melts.
  • The circuit gets broken and the flow of current stops, thus protecting the appliance. 
  • This wire is fitted in a groove in a body of porcelain-like non-conducting material. For domestic use, fuse wires with upper limits of 1 A, 2 A, 3 A, 4 A, 5 A and 10 A are used.


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