Answer:
[tex]1.873\times 10^{13}[/tex] electrons should be added to one of these spheres to make it electrically neutral.
Explanation:
Total charge on each sphere = +3.0 μC =[tex]3\times 10^{-6} C[/tex]
[tex]1 \mu C=10^{-6} C[/tex]
In order to neutralize the positive charge equal magnitude of negative charge is to be added.
Total charge electrons, Q= -3.0 μC =[tex]-3\times 10^{-6} C[/tex]
Number of electrons = n
Charge on a single electron, e = [tex]-1.602\times 10^{-19} C[/tex]
Q = n × e
[tex]-3\times 10^{-6} C=n\times (-1.602\times 10^{-19} C)[/tex]
[tex]n=\frac{-3\times 10^{-6} C}{-1.602\times 10^{-19} C}=1.873\times 10^{13}[/tex]
[tex]1.873\times 10^{13}[/tex] electrons should be added to one of these spheres to make it electrically neutral.
