Question

Identify conductor and insulator from the following:- Sulphur, Silver, Copper, Cotton, Aluminium, Air, Nichrome, Graphite, Paper, Porcelain, Mercury, Mica, Bakelite, Polythene, and Manganin.

Answer 1

Conductor:

1. Conductors are materials that contain free carriers like electrons, ions, or other particles.
2. These particles are loosely bound inside the conductor.
3. They are responsible for carrying current or heat across the conductor.
4. Among the given list silver, copper, aluminum, nichrome, graphite, mercury, and manganin are conductors.

Insulator:

1. Insulators are materials that do not contain any free particles.
2. Therefore, they do not contain any carrier that can carry heat or current across the insulator.
3. Among the given list, sulphur, cotton, air, paper, porcelain, mica, bakelite, and polythene are insulators.