Question

Substances which allow current to flow through them easily __________ .

Answer 1

Conductors:

1. Substances that allow electricity to pass through them are called conductors.
2. Examples: Iron, Copper, Silver, Aluminum, etc.

Insulators:

1. Substances that do not allow electricity to pass through them are called insulators.
2. Examples: Wood, plastic, rubber, etc.

Thus, substances which allow current to flow through them easily are conductors.