Question

can someone please explain the concept of conductors abd insulators
Also, why do we use certain materials for heating elements in heaters and bulbs, wires
Grade 10 science, please dont give any wrong answers, if you dont know dont answer, its urgent​

Answer 1

Answer:

In simple terms, an electrical conductor is defined as materials that allow electricity to flow through them easily. This property of conductors that allow them to conduct electricity is known as conductivity.

The flow of electrons in a conductor is known as the electric current. The force required to make that current flow through the conductor is known as voltage.

Graphite, the human body and the earth are good conductors of electricity. Some of the common conductor examples include metals such as:

Copper

Gold

Iron

Insulators are materials that hinder the free flow of electrons from one particle of the element to another. If we transfer some amount of charge to such an element at any point, the charge remains at the initial location and does not get distributed across the surface. The common process of charging of such elements includes charging by rubbing (for some elements, with the help of suitable materials) and charging by induction.

Some of the common insulator examples are given below:

Plastic

Wood

Glass

Explanation:

In most of the household heating appliances, nichrome element is used because of the following reasons: (i) Its melting point is high. (ii) Its resistivity is large. (iii) It can be easily drawn into thin wires (i.e., it's ductile).

Here the certain elements are alloys and nichrome is an alloy....

Answer 2

◾ Conductors

Conductors are the substances who can conduct heat and electricity I.e conductors are good conductor of heat and electricity.

Example -

◾ Copper

◾Gold

◾ Aluminum

◾Etc

Generally metals are conductors (good conductors of heat and electricity.)

◾ Insulators

Insulators are the substances who can not conduct heat and electricity I.e Insulators are the bad conductor of heat and electricity.

Generally non metals are Insulators (bad conductor of heat and electricity).

Example -

◾ Plastic

◾ Rubber

◾ Wood

◾ Etc

__________________________________

We use certain materials like tungsten because such metals have high melting and boiling point due to which they can stand against extreme heat.

( These process of producing heat takes place due to heating effect of electric current.)

hope it helps...