A scientist wipes a rubber rod with a wool cloth which leads to a negative charge on the rod. After this, the scientist touches the rod to a neutral metal sphere. This will transfer the negative charges from the rod to the sphere:
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Which statement explains what will happen to the negative charge, and why?
(1 point)
Responses
It will remain only on one spot of the sphere, because the low conductivity of the metal prevents the charges from spreading out.
It will remain only on one spot of the sphere, because the low conductivity of the metal prevents the charges from spreading out.
It will only spread to the air around the sphere, because negative charges need to occupy a big area.
It will only spread to the air around the sphere, because negative charges need to occupy a big area.
It will slowly move to the bottom of the sphere, because the charges are heavy and will sink to the bottom.
It will slowly move to the bottom of the sphere, because the charges are heavy and will sink to the bottom.
It will spread uniformly over the surface of the sphere, because of the conducting nature of the sphere and similar charges push away from each other.
It will spread uniformly over the surface of the sphere, because of the conducting nature of the sphere and similar charges push away from each other.
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The correct statement is: It will spread uniformly over the surface of the sphere because of the conducting nature of the sphere and similar charges push away from each other.
When the negatively charged rod is touched to the neutral metal sphere, the negative charges will flow from the rod to the sphere. Since the metal sphere is a conductor, the negative charges will be free to move throughout the entire surface of the sphere. The similar charges will repel each other, causing the negative charges to spread out evenly over the surface of the sphere.
The correct statement is: It will spread uniformly over the surface of the sphere because of the conducting nature of the sphere and similar charges push away from each other.
The correct answer is:
It will spread uniformly over the surface of the sphere because of the conducting nature of the sphere and similar charges push away from each other.
Explanation:
When the scientist touches the rod to the neutral metal sphere, the excess negative charges on the rod will flow onto the sphere. This happens because the metal sphere is a conductor, which means it allows charges to flow freely. The negative charges on the rod will repel each other and spread out over the surface of the sphere. This is because like charges (negative charges in this case) repel each other and naturally spread out as far away as possible from each other.