Question

Name the material used for making the (a) fuse wire (b) connecting wire (c) heating element (d) filament of the bulb..??

Answer 1

a) alloy of tin and lead.

b)aluminium and copper

c)nichrome

d)tungsten

Answer 2

• Fuse wire is made from an alloy of 'lead and tin'. Alloy of lead and tin has a low melting point and so is used for making the fuse wire.

• Connecting wire is made from copper. Copper is abundantly available and a cost effective materials for making connecting wires.

• Nichrome is used for making heating element. This is because nichrome is 'highly resistive' and does not undergo oxidation at room temperature.

• 'Tungsten' is used for making 'filaments' of bulb because of its resistivity.