What is electric field E in magnitude and direction at the centre of a square of side 6 cm due to the charges +q, -q, +2q and -2q placed at the corner of the square

Question

anonymous · Answer

You need to provide a more specific orientation of the charges: which are in which corner.

anonymous · Answer

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abhisar · Answer

The diagram can be simplified as below, now u have to calculate the net electric field by two charges i.e -3q and angle between the fields is 90° |dw:1403325190382:dw|