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manjuvenamma
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Why don't metal objects such as a nail get charged by friction like the famous comb, plastic rod or glass rod - all insulators?
They do.manjuvenamma said:Why don't metal objects such as a nail get charged by friction like the famous comb, plastic rod or glass rod - all insulators?
On an insulator, like a comb, the transferred charged stays where it was placed.manjuvenamma said:Why don't metal objects such as a nail get charged by friction like the famous comb, plastic rod or glass rod - all insulators?
No charge is transferred when a boy (or girl) scout magnetizes metal.russ_watters said:They do.
You can make a compass this way.
Metals have a high number of free electrons, which are able to move freely within the material. This means that when a metal is rubbed against another material, the electrons are able to transfer and balance out any differences in charge, resulting in no net charge on the metal.
Yes, it is possible for metals to get charged by friction under certain conditions. For example, if the metal is in a dry environment and rubbed against a material with a significantly different electronegativity, it may develop a small charge. However, this charge is usually short-lived and easily dissipated due to the high conductivity of metals.
Non-metals, such as rubber or plastic, have a much lower number of free electrons compared to metals. This means that when they are rubbed against another material, the transfer of electrons is not as efficient and a net charge can build up on the surface of the material.
Yes, the surface roughness and contact area between two materials can also affect the transfer of electrons and the resulting charge. A larger contact area and smoother surfaces can lead to a more efficient transfer of electrons and a lower chance of charge build-up on the metal.
Yes, this property of metals is often taken advantage of in industries such as electronics and manufacturing. For example, in the production of electronic components, metals are often used as grounding materials to dissipate any static charge and prevent damage to sensitive components.