Question

Explain how trapped air helps in insulation.

Answer 1

An electrical insulator is a substance that prevents electric current from flowing freely. The electrons in the insulator's atoms are tightly bound and cannot easily move. Other materials, semiconductors, and conductors are better at conducting electric current. The resistivity of an insulator distinguishes it from semiconductors or conductors; insulators have higher resistivity than semiconductors or conductors. The most common examples are non-metals.

Complete step by step solution:
Insulators support and separate electrical conductors in electrical equipment without allowing current to flow through them. Insulation is a bulk insulating material used to wrap electrical cables and other equipment.
Insulating supports used to attach electric power distribution or transmission lines to utility poles and transmission towers are also referred to as insulators. They bear the weight of the suspended wires while preventing current from flowing through the tower to the ground.
Since air is a gaseous substance with a spread-out molecular configuration, it acts as a good insulator. A double-pane window is one example of air as an insulator.
The answer to the question of how air can act as an insulator is that air is a gaseous mixture that conducts heat poorly. Convection is a method of transferring air. As a result, it is possible to say that heat can be distributed by air.
Air insulation examples
Cooking utensils with air cavities
Deficiencies in the foam insulation
Walls with air gaps

Note:
The absence of electrical conduction is referred to as electrical insulation. A charge flows if states are available into which electrons can be excited, according to electronic band theory (a branch of physics). This enables electrons to gain energy and move through a conductor like a metal. If none of these states exist, the material is an insulator.