Question

four point charges are placed on vertices of square of side 1 metre shown in figure electric field at centre square ​

Answer 1

Given :

Length of side of square = 1m

Magnitude of charges placed at vertices = q

To Find :

The electric field at the center of the square

Solution :

• The electric field due to a point charge is given by E = kq/r²

• All the vertices are equidistant from centre of square and all have equal charges

• The magnitude of electric field due to all charges is same

• The electric field produced by charges present at diagonals is opposite in direction which gets cancelled

The resultant magnetic field will be zero at the centre