Induction: Induced & Permanent Charging

Static electricity can be generated through: Friction, Conduction, INDUCTION

Induction

INDUCTION involves the movement of electrons in a neutral object when a charged object is brought close to the neutral object. The movement occurs WITHOUT DIRECT CONTACT between objects.

Induced Charge Separation/ Temporary Charging

  • When a negatively charged rod is brought close to a neutral metal rod, the electrons in the neutral rod move to one side of the object.
  • The electrons move back when the charged object is removed.
  • THIS IS A TEMPORARY CHARGE.
  • There is no change in the number of electrons on the object, so overall THE OBJECT REMAINS NEUTRAL.

Permanent Charging

  • When you take a temporarily charged object and ground it, the charged object retains its charge.
  • This is called permanent charging by induction.

Summary

  • Charging by induction always results in two objects with different charges.
  • The object that induces the charge keeps its original charge, while the object whose charge was induced receives the opposite charge.
guest

5 Comments
Most Voted
Newest Oldest
Inline Feedbacks
View all comments
Brahm
Brahm
11 years ago

THANK YOU!!! 5 minutes of reading this taught me more than my teacher in TWO DAYS!!!

Shivam
Shivam
Reply to  Brahm
4 years ago

Lol same bro

Jayden
Jayden
1 year ago

how does permanent induction work if the rod is positive?

Maryum
Maryum
6 years ago

How do u induce charge in cardboard

Sam A.
Sam A.
8 years ago

Thank you!