Number of Null Points in a Ring (Newton's Method)
Автор: ISAC learning (NMS Sir)
Загружено: 2025-12-06
Просмотров: 3026
Описание:
Due to a uniformly charged ring, the number of null points inside the ring is only one, and that is at the centre. As we move close to the rim (periphery) of the ring, the electric field does not become zero; instead, it tends to become very large.
To explain this, we used the idea of Newton’s Shell Theorem and its geometrical similarity with the ring to show why only the centre becomes a null point.
In the case of a triangle with equal charges placed at the vertices, there are four null points, and all four lie inside the triangle.
Similarly, in a square with equal charges at the four corners, there are five null points, all lying inside the square.
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