Thanks You are given 4 identical uncharged conducting marbles and a positively c

Question

Thanks You are given 4 identical uncharged conducting marbles and a positively charged clear rod. You do the following: Bring the rod near marble A, ground the marble, and then disconnect the ground before removing the rod. Without loss of charge to the environment, bring marbles A and D into contact, then separate them. Again without loss of charge to the environment, bring marble B into contact with marble C, then separate them. Again without loss of charge to the environment, bring marble C into contact with marble D, then separate them. What are the final charges, if marble A was given a charge -Q in step (i)? Select One of the Following:

Explanation / Answer

After step 1

charge on marble A = - Q

After step 2

charge on marble A = - Q/2

charge on marble B = - Q/2

After step 3

charge on marble A = - Q/2

charge on marble B = - Q/4

charge on marble C = - Q/4

After step 4

charge on marble A = - Q/2

charge on marble B = - Q/4

charge on marble C = - Q/8

charge on marble D = - Q/8

Thus, Final charges are as follows -

charge on marble A = - Q/2

charge on marble B = - Q/4

charge on marble C = - Q/8

charge on marble D = - Q/8

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