Are there any resistance to the fuse?
Fuse blows and the principle is Joule's law
Fuses are allowed to pass a larger current or voltage value, allowing short-term over-working conditions.
In general, when the circuit current or voltage exceeds the rated value, the fuse will not immediately fuse
The fuse has a resistance value, in fact, even the wire also has resistance, but the resistance of the wire is very small (the nature of the conductor), in the general circuit calculation, we usually do not count
