Before we study this chapter, let's look at what are good and bad conductors of electricity

Good Conductor of Electricity

Those materials which allow electricity to pass through them are called good conductors of electricity

Example

Solids like Copper, Aluminium conduct electricity

Liquids like Tap Water, Lemon Juice, Mercury conduct electricity

 

Bad Conductor of Electricity

Those materials which do not allow electricity to pass through them are called Bad Conductors

Example

Solids like Rubber, Plastic, Wood do not conduct electricity

Liquids like Distilled Water, Alcohol do not conduct electricity

 

Good or bad conductor - Teachoo.png

 

If we attach wires to the metal part of the screwdriver, the bulb will glow.

So, it is a good conductor of electricity

But, If we attach wires to the plastic part of the screwdriver, the bulb will not glow.

So, it is a bad conductor of electricity



Difference between Good Conductor and Bad Conductor of Electricity

Good Conductors

Bad Conductors

Good conductors are those materials which allow electricity to pass through them easily.

Bad conductors are those materials which do not allow electricity to pass through them easily.

Example - Copper, Aluminium

Example - Rubber, Wood

Can be used to make electric circuits.

Can not be used to make electric circuits.

 

  1. Class 8
  2. Chapter 14 Class 8 - Chemical Effects Of Electric Current

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CA Maninder Singh
CA Maninder Singh is a Chartered Accountant for the past 9 years and a teacher from the past 16 years. He teaches Spoken English, Written English, Grammar and Vocabulary at Englishtan.