7. Xand Yare two uncharged metal spheres on insulating stands, and are in contac

Question

7. Xand Yare two uncharged metal spheres on insulating stands, and are in contact with each other. A positively charged rod R is brought close to A as shown in Figure (a). (Note the rod does not touch the spheres). Figure (a) Sphere Yis now moved away from X, as in Figure (b) larte Figure (b) What are the final charge states of X and ? (A) Both X and Y are neutral (B) Xis positive and Y is neutral (C) X is neutral and Y is positive (D)X is negative and Y is positive (E) Both X and Y are negative - (F) Both X and Y'are positive

Explanation / Answer

X- NEGATIVE

Y - POSITIVE

When rod is brought close to X, It will attract the free electrons available towards its side .From right side of the sphere assembly the electrons will move towards left side leaving behind Protons. When spheres are seprated, left side sphere have excess electrons while right side sphere have excess protons.

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