Question

why fuse is connected in series and write the properties of fuse wire .???​

Answer 1

Because in series same current flows through each resistor. If current exceeds the marked value of fuse it melts. So to make fuse work properly it is connected in series

Answer 2

fuse wire is connected in series because if it is connected in parallel then the circuit may not cut off when required because the current will flow through other wire parallel wire connected to it

a fuse wire must have low melting point as per requirement of the appliance it should not have too high melting point

a fuse wire should be a good conductor also