Induction: Induced & Permanent Charging

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.

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