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Positive charge
Both are examples of static electricity generation. The big difference is the way the electricity is generated.
electrons are stripped away from the atoms in the glass and transferred to the cloth. This leaves the glass with more positive than negative charge, so you get a net positive charge.
A plastic ruler is rubbed vigorously with a woolen cloth
Silk Cloth
Positive charge
When glass rod is rubbed with silk cloth it becomes positively charged and the silk cloth becomes negatively charged. This is because the glass rod looses electrons to the silk cloth which makes it positive and the silk cloth becomes negative.
Both are examples of static electricity generation. The big difference is the way the electricity is generated.
electrons are stripped away from the atoms in the glass and transferred to the cloth. This leaves the glass with more positive than negative charge, so you get a net positive charge.
A plastic ruler is rubbed vigorously with a woolen cloth
Silk Cloth
The Physicist who said first that the charge on a glass rod rubbed with silk is positive was Michael Faraday.
Yes, rubbing a silk cloth on glass cause electrons to move to the cloth. As a result, glass rod acquires positive charge and silk acquires negative charge.
Glass rods can be used to stir and displace liquids. Glass is often used because it does not react with many chemicals, especially acids.
There is a very big difference between the electrical charge of a balloon rubbed in a person's hair and a glass rod rubbed with silk. The charge from the balloon will just make it stick to objects. The charge from the glass rod will emit a very large electrical shock that might knock a person to the ground. This is because the glass rod is a better conductor of electricity than the balloon.
the silk will rub of the electrons on the silk, leaving the glass positively charged
One is a negative static charge, the other positive. The exact charge depends on how long and how vigorous the rubbing is. teehee