If there was ever a conducting pathway to a more spacious piece of real estate, one could be sure that the electrons would be on that pathway to the greener grass beyond. The perimeter the sphere is the extreme to which they can go. A negatively charged metal sphere has an excess of electrons those electrons find each other repulsive and distance themselves from each other as far as possible. Understanding the process demands that you understand that like charges repel and have an intense desire to reduce their repulsions by spreading about as far as possible. To explain the process of charging by contact, we will first consider the case of using a negatively charged metal sphere to charge a neutral needle electroscope. Because charging by conduction involves contact, it is often called charging by contact.Ĭharging by Conduction Using a Negatively Charged Object In contrast to induction, where the charged object is brought near but never contacted to the object being charged, conduction charging involves making the physical connection of the charged object to the neutral object. Each of these examples involves contact between a charged object and a neutral object. The neutral physics student becomes charged as the result of contact with the Van de Graaff generator.

And finally, suppose that an uncharged physics student stands on an insulating platform and touches a negatively charged Van de Graaff generator.

The neutral electroscope becomes charged as the result of being contacted by the metal sphere. Or suppose that a negatively charged metal sphere is touched to the top plate of a neutral needle electroscope. The neutral metal sphere becomes charged as the result of being contacted by the charged aluminum plate.

Suppose that a positively charged aluminum plate is touched to a neutral metal sphere. As was the case for charging by friction and charging by induction, the process of conduction will be described and explained using numerous examples of electrostatic demonstrations and lab experiments.Ĭharging by conduction involves the contact of a charged object to a neutral object. In this section of Lesson 2, a third method of charging - charging by conduction - will be discussed.

In the previous two sections of Lesson 2, the process of charging by friction and charging by induction were described and explained.

Construct 2 physics ball bounce touch