(a) A fuse should always be placed in the................re of a mains circuit. (b) The earth wire should be connected to the..…............... of an appliance. mort Answer Type Questions 18. (a) Of what substance is the fuse wire made ? Why? (b) Explain why, a copper wire cannot be used as a fuse wire.
Answers & Comments
Answer:
a) live wire
b)metal case
18) a)The fuse wire is made of tin-placed copper wire because of its low melting point.
b)Copper wire cannot be used as a fuse wire since meting point of Cu is higher and resistance is very low and current canflow through it without melting it and without breaking the circuit.
Answer:
(a) live wire
Explanation:
fuse is a circuit element made of highly resistance material such that melts when there is overloading in the circuit. It is always connected in the live wire as to break the circuit preventing the connected devices from damage.