Question

distinguish between a direct current what is the role of fuse and used in serious with any electric appliance why should a fuse with the defined rating not be replaced by one with a larger rating alternating current​

Answer 1

Answer:

Fuse is used for protecting appliances due to short-circuiting or overloading. The fuse is rated for a certain maximum current and blows off when a current more than the rated value flows through it.

If a fuse is replaced by one with larger ratings, the appliances may get damaged while the protecting fuse does not burn off. This practice of using fuse of improper rating should always be avoided.