Question

give use of good conductor and bad conductor ​

Answer 1

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Good conductor of heat is all metals which allow the heat to pass through them. eg.- Metals etc..

Bad conductor of heat are plastics,wood,clay etc.This things do not allow heat a to pass through them.
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Answer 2

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Good Conductor of Heat↘

Aluminum , copper and stainless steel are good heat conductors as they are metals , They are used in making cooking pots and the kettles that are used in the houses and the facutories .

Bad Conductor of Heat↘

Things which are bad conductors of heat are used as insulators. In same occasions it is important (1) to prevent heat loss from a hot body (2) to prevent heat from entering cold body. 3. Fur, wool, cotton wool, cork, feathers, sawdust, trapped air in birds' feathers etc. act as good insulators.

Good conductors of Electricity↘

Silver is the best conductor of electricity. However, it is costly and so, we don't use silver in industries and transmission of electricity. Copper, Brass, Steel, Gold, and Aluminium are good conductors of electricity. We use them mostly in electric circuits and systems in form of wires.

Bad Conductors of Electricity↘

Insulators oppose electrical current and make poor conductors.Some common insulators are glass, air, plastic, rubber, and wood.

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