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A body consists of five sections. Sections 1 and 2 have charge 3q each. Sections 4 and 5 have charge 2q and 4q respectively. What is the magnitude of charge on section 3 if the total charge on body is 9q? |
5q -3q 3q 2q |
3q |
Let charge on section 3 be x. Total charge = 9q = 3q + 3q + x + 2q + 4q 9q = 12q + x x = -3q magnitude of x = |-3q| = 3q |
