Question

c) Identify the material that should be used to cover electrical wires.
O Plastic
(ii) Iron
(iii) Copper
(iv) Aluminium​

Answer 1

Answer:

plastic is the answer for your question

Answer 2

Required Answer:

${\underline {\boxed {\Large {\rm {(i) \: Plastic} }}}}$

Explanation:–

Here, in the given options we have :

• Plastic, iron, copper and aluminum.

›» All the metals are good conductors of electricity. So, even with a slightest touch we can get a shock if we touch the covering material of electrical wires. As iron, copper and aluminum are metals. So, these materials shouldn't be used to cover electrical wires.

›» On the other hand, plastics are bad conductors of electricity. So, plastic is an appropriate material to be used to cover electrical wires.

Thus, Option (i) is correct . ✔

_________________________________

Extra Information:

• Good conductors : Good conductors of electricity are those that allow current to pαss through them.

For example : All metals are good conductors of electricity.

• Bad conductors : Good conductors of electricity are those that don't allow current to pαss through them. (Iron, copper etc.)

For example : All non-metals are bad conductors of electricity [except graphite]. (Wood, rubber etc.)

→ Bad conductors of electricity are also called insulators.

_______________________________