Why Can't Brass Rods Be Charged by Rubbing?

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SUMMARY

Rubbing a polythene rod with a cloth results in a negative charge due to the transfer of electrons, while a brass rod remains uncharged when rubbed. This phenomenon occurs because brass is a conductor, allowing electrons to move freely and preventing the accumulation of charge. In contrast, polythene is an insulator, which retains the charge after rubbing. Therefore, the inability to charge the brass rod through friction is due to its conductive properties.

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Hey guys, I have a physics exam tomorrow. I found a question that I can't solve.

Rubbing a polythene rod with a cloth makes the polythene negatively charged but rubbing a brass rod in this way will not charge it. Why can't the brass rod be charged this way?

Thanks
 
Physics news on Phys.org
Would you consider brass to be a conductor or an insulator?
 
Brass is a conductor isn't it?
 

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