Question

definition of fuse and factors affecting the resistance of a conductors

Answer 1

1.A fuse is nothing more than a short length of wire designed to melt and separate in the event of excessive current. Fuses are always connected in series with the component(s) to be protected from overcurrent, so that when the fuse blows (opens) it will open the entire circuit and stop current through the component(s).


2.There are several factors that affect the resistance of a conductor; material e.g. copper has lower resistance than steel. length - longer wires have greater resistance. thickness - smaller diameter wires have greater resistance.