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  4. Figure below show regular hexagons, with charges at the vertices. In which case is the electric field at the centre zero?

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Q. Figure below show regular hexagons, with charges at the vertices. In which case is the electric field at the centre zero?

BHUBHU 2008

Solution:

In the case ,$(a)$ the fields due to charges at the opposite corners cancel each other. So, in this case net electric field at the centre will be zero.