A student is investigating what happens when a neutral metal sphere sitting on an insulated stand is touched by a negatively charged rod. The set up for the student's investigation is shown in the diagram.
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What will happen to the excess electrons when the negatively charged rod touches the metal sphere?
a
The excess electrons will move from the sphere to the rod and stay clustered near the end of the rod that touches the sphere.
b
The excess electrons will move from the sphere to the rod and spread out along the rod.
c
The excess electrons will move from the rod to the sphere and spread out on the sphere.
d
The excess electrons will move from the rod to the sphere and stay clustered in the area where the rod touches the sphere.