Explain the role of fuse in series with any electrical appliance in an electric circuit. Why should a fuse with defined rating for an electric circuit not be replaced by one with a larger rating?
A fuse used in series with an electric appliance limits the current through the appliance. Thus, it protects the appliance due to short-circuiting or overloading as when current exceeds the limit for which the fuse is rated, it blows off and the appliance is disconnected from the electirc supply.
