how does a rubber rod become negatively charged through friction?\nit touches a negatively charged object…

how does a rubber rod become negatively charged through friction?\nit touches a negatively charged object, and protons move off of the rod.\nit touches a positively charged object, and electrons move onto the rod.\nit is rubbed with another object, and electrons move onto the rod.\nit is rubbed with another object, and protons move off of the rod.

how does a rubber rod become negatively charged through friction?\nit touches a negatively charged object, and protons move off of the rod.\nit touches a positively charged object, and electrons move onto the rod.\nit is rubbed with another object, and electrons move onto the rod.\nit is rubbed with another object, and protons move off of the rod.

Answer

Brief Explanations:

Charging by friction involves transfer of electrons. When a rubber rod is rubbed with another object, if it becomes negatively - charged, electrons move onto the rod as electrons are the mobile charge carriers in solids. Protons are in the nucleus and do not move during such processes. Touching a charged object is charging by conduction, not friction.

Answer:

It is rubbed with another object, and electrons move onto the rod.