Problem: A plastic rod is charged to -20nC by rubbing.a. Have electrons been added to the rod or protons removed? Explain.b. How many electrons have been added or protons removed?

FREE Expert Solution

Charge:

q=ne

e is the charge of an electron.

(a)

Protons exist in the nucleus of the atom and are not available for charge transfer.

Electrons are negatively charged. When electrons are added to a surface it becomes negatively charged. On the other hand, if a surface loses electrons, it is positively charged because it has more protons than electrons. 

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Problem Details

A plastic rod is charged to -20nC by rubbing.

a. Have electrons been added to the rod or protons removed? Explain.

b. How many electrons have been added or protons removed?

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