Physics for IGCSE & O level - Electricity (Section 5 - No. 45)
What would be the consequence of a fuse having too high a current rating?
The appliance would not work.
The fuse would blow more easily.
The appliance could overheat and cause a fire.
The current would be reduced
Forklaring
If a fuse has a rating too high, it may not blow when the circuit overloads, leading to a fire risk.