2. A circular ring has a negative charge of 150 C. At the center of the ring is positive point charge of positive 580 C.
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2. A circular ring has a negative charge of 150 C. At the center of the ring is positive point charge of positive 580 C.
2. A circular ring has a negative charge of 150 C. At the center of the ring is positive point charge of positive 580 C. The distance OA is 3 m and OB is 5 m. The radius of the circle is 2 m. What is the minimum work done in moving an electron from B to A, by an external force. G А B
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