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Q.

What is the defined rating of a fuse in a circuit?


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a

5 A

b

10 A

c

15 A

d

20 A 

answer is A.

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Detailed Solution

 The defined rating of a fuse in a circuit is 5 A.
Electric Fuse is a safety device that protects electric circuits and appliances by breaking the flow of any unduly high electric current. It is a low melting point copper or other metal wire that breaks down due to heat caused by high voltage or overload to avoid short circuits or any damage to the device.
When the fuse rating is 5 A, the fuse wire will quickly melt and prevent damage to the electric appliances.
 
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