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###### Four point charges Q are placed at four vertices of a square with sides a, in air:(a Find the direction and magnitude of the electric force on each of the charges.b) Find direction and magnitude of the electric field at the crossing point of the square' s diagonalsFind the electrostatic potential at the crossing point of the square s diagonals (assuming the zero potential point to be at infinity)

Four point charges Q are placed at four vertices of a square with sides a, in air: (a Find the direction and magnitude of the electric force on each of the charges. b) Find direction and magnitude of the electric field at the crossing point of the square' s diagonals Find the electrostatic potential at the crossing point of the square s diagonals (assuming the zero potential point to be at infinity)

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