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Question:

Why the resistance of the fuse to be large

Why the resistance of the fuse to be large

Answer:

When the material and shape of the fuse are determined, the resistance R is relatively constant (if its resistance temperature coefficient is not taken into account).
May 9, 2017
When the current flows through it, it will heat up, with the increase of time its heat is also increasing
May 9, 2017
The size of the current and the resistance determines the rate at which the heat is generated. The structure of the fuse and the condition of its installation determine the rate of heat dissipation. If the velocity of heat is less than the rate of heat dissipation, the fuse will not blow
May 9, 2017
If the velocity of heat is equal to the rate of heat dissipation, it will not blow for a long period of time.
May 9, 2017
If the heat generated by the speed is greater than the speed of heat dissipation, then the heat will be more and more
May 9, 2017

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