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A plastic rod with an initial charge of +75 nC is brought into contact with a metal sphere with an initial charge of – 25 nC. After the plastic rod has touched the metal sphere, the rod has a charge of +60 nC and the sphere has a charge of -10 nC. How many electrons moved from the sphere to the rod when they were in contact? |
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Answer» Answer: here U can see that there is a transfer of net 15 NC charge and we KNOW that Q=ne 15 * 10^-9 C=n*(1.6*10^-19) n=15*10^-9/1.6*10^-19 n=9375*10^7 |
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