ICSE Class-8 Electricity ( part -B Static electricity)

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 Static electricity 



 Static electricity 



Static electricity is produced by friction between two insulating materials. When the materials are rubbed together, electrons are transferred from one material to another , giving rise to a static electricity.

● Insulators like glass , plastic , ebonite etc can be charged by friction.

●Charge developed  on the glass rod when it is rubbed with silk as positive  and the charge developed  on the ebonite rod when it is rubbed with fur as negative. 

●Like charges repel each other while unlike charges attract each other. 

● Conductors are charged by methods -        i) conduction ii) Induction 

  i) In conduction - the conductor to be charged is touched with charged body. The conductor gets charged by the similar kind  of charge as on the changing body


ii) In induction a conductor gets charged in presence of the charged body (without touching) and it gets uncharged on removal of charged body .The end of the conductor near the charged body is oppositely charged while the other far from the charged body is charged by the same kind of charge


● An Electroscope is a device which is used to detect the presence and nature of the charge on a body. 

●There are two types of electroscope
- 1. Pith  ball Electroscope.  

2. Gold leaf electroscope 


link to objective questions (CURRENT ELECTRICITY)

■  link to Questions  Answer( CURRENT ELECTRICITY)



Solution  ( STATIC ELECTRICITY)

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