Fuse

A fuse is a safety device to prevent excess current flowing in an electric circuit. It consists of a thin metal wire of low resistance and low melting point. When an electrical appliance or some other piece of electrical equipment becomes faulty, therefore allowing an excess electric current to flow through its circuit, this causes the wire inside the fuse to melt and thus break the flow of current. 

Fuses, by design are a one-time-use protective device - once they are used ("burn out"), they're worthless. That is why homes typically use circuit breakers: a breaker acts similarly to a fuse in that it opens a circuit when excessive current flows, but - because nothing actually melts inside it - it can then be reset without having to be replaced by a new one, as has to be done for a fuse

Fuse is a piece of wire of a material with a very low melting point. When a high current flows through the circuit due to or a, the wires gets heated and melts. As a result, the circuit is broken and current stops flowing and it’s show by “F”.

Checking

Meter set in X10 then meter one probe is fuse one side & Second probe is second side Connect.Meter show reading it's OK.