1.

A point charge q_1 is placed inside cavity 1 and another point charge q_2 is inside cavity 2. A point charge q is placed outside the conductor. For the situation described above, answer the following questions. vecE inside the conductor at point S distant r from point charge q, due to charge on outer surface of the conductor, would be

Answer»

`(Q+q_1+q_2)//4piepsilon_0r^2` away from charge q
`q//4piepsilonr^2` TOWARDS charge q.
zero
cannot be determined

Solution :`vec(E)` inside the conductor due to outside charges `=0`
`vec(E)_(q)+vec(E)_(q_(1)+q_(2)+Q)=0` ltbr. Or `vec(E)_(q_(1)+q_(2)+Q)=-VER(E)_(q)=(q)/(4piepsilon_(0)r^(2))` TOWARD q


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