Question

b) Give reasons for the following:
i. Household electric wires are covered with plastic or rubber.
37% lead).
ii. An electrician only replaces a blown off fuse with a wire prepared from tin and lead alloy (63%​

Answer 1

Answer:

bi) Most electrical wire is covered in a rubber or plastic coating called insulation. ... The purpose of insulation covering the metal part of an electrical wire is to prevent accidental contact with other conductors of electricity, which might result in an unintentional electric current through those other conductors

ii) it is because these alloy will have the characters of the fuse wire as it is readily melting when excess current flows through it

Answer 2

Answer:

(i) Most electrical wire is covered in a rubber or plastic coating called insulation. The purpose of insulation covering the metal part of an electrical wire is to prevent accidental contact with other conductors of electricity, which might result in an unintentional electric current through those other conductors.

(ii) it is because these alloy will have the characters of the fuse wire as it is readily melting when excess current flows through it.

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