Question

Conductors have __ and insulators do not have __​

Answer 1

Answer:

conductor

The materials, which have free electrons are good conductor of electricity. In general all the metals and their Alloys are good conductors of electricity.

Hence among the given materials, following are conductors:

Silver, Copper, Aluminium, Nichrome, Graphite, Mercury, Manganin

Note: Graphite is not a metal, but still a conductor of electricity, as it has delocalized(free) electrons, which help in conduction.

Insulators:

Insulators are the materials which do not have free electrons, therefore do not conduct electricity. Following are insulators:

Sulphur, Cotton, Air, Paper, Porcelain, Mica, Bakelite, Polythene

Answer 2

• Conductors are the materials that have free electrons they conduct electricity while insulators do not conduct electricity they do not have free electrons.

• As we know conductors have free electrons and insulators do not have free electrons.

• The metals, Alloys of metals are good conductors of electricity, aluminum, nichrome, silver, graphite, mercury, etc are conductors of electricity. Porcelain, mica, cotton, air, etc are insulators.