Two neutral metal spheres on wood stands are touching. a negatively charged rod is held directly above the top of the left sphere, not quite touching it. while the rod is there, the right sphere is moved so that the spheres no longer touch. then the rod is withdrawn. which answer is correct?

a) both the spheres are neutral.
b) left sphere is negatively charged, another is charged positively.
c) right sphere is negatively charged, another is charged positively.
d) both the spheres are charged positively.
e) both the spheres are charged negatively

Option (C) is the correct answer.

Explanation:

As we know that metals are able to conduct electricity so, when a negatively charges rod is kept closer to the left sphere then electrons will enter the sphere.

Since, like charges repel each other. Hence, some of the negative changes from the rod will repel the negative charges of left sphere.

As both left and right spheres are touching each other so, the electrons will move towards the right sphere. As a result, there will be too many electrons (negative charge) present on the right sphere and very less electrons present in the left sphere.

Thus, we can conclude that the statement right sphere is negatively charged, another is charged positively, is true.

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