How to distinguish the charge carry by different object after rub by something?

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In summary, distinguishing the charge carried by different objects after being rubbed by various things has historically been a difficult task. Early on, it was believed that there were two types of electricity, depending on what was being rubbed. However, through careful experimentation, it was discovered that these were actually opposites of the same thing. This understanding took a long time to develop and Wikipedia has a comprehensive overview and history of the concept.
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henry407
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How to distinguish the charge carry by different object after rub by something??

Homework Statement


How to distinguish the charge carry by different object after rub by different things??


Homework Equations


Nope~


The Attempt at a Solution


I do the experiment in the school, but every group got different answers,. So I hope someone chould give me the theory about my question, thanks~~
 
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Please describe the experiment.

Historically it has been very difficult to determine the charge that gets transferred when different items get rubbed. Initialy it was thought that there were two kinds of electricity - the kind you get rubbing resin and plastic, and the kind you get rubbing glass.

Careful experimentation can show you that these two are opposites of the same thing - so that it is useful to think of one as the presence of something and the other it's absence. However, which it was took a long time to work out.

Wikipedia has an overview and history.
http://en.wikipedia.org/wiki/Electric_charge
 

FAQ: How to distinguish the charge carry by different object after rub by something?

How can I determine the charge of an object after it has been rubbed by something?

In order to determine the charge of an object after it has been rubbed by something, you can use a device called an electroscope. This device measures the amount and type of charge on an object by detecting the presence of static electricity.

Can rubbing different materials on an object result in different charges?

Yes, rubbing different materials on an object can result in different charges. This is because different materials have different levels of electron affinity, which affects how easily they gain or lose electrons when rubbed against another material.

Is it possible for an object to have a neutral charge after being rubbed by something?

Yes, it is possible for an object to have a neutral charge after being rubbed by something. This can occur when the object gains and loses an equal number of electrons, resulting in a net charge of zero.

How can I determine the polarity of a charged object after it has been rubbed by something?

To determine the polarity of a charged object, you can use a device called a polarized capacitor. This device measures the direction of the electric field surrounding the object, which can indicate whether the object has a positive or negative charge.

Can an object's charge change after being rubbed by something?

Yes, an object's charge can change after being rubbed by something. This is because the act of rubbing can cause the transfer of electrons, resulting in a change in the object's overall charge.

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