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Electric field intensity, = 3 × 103 î N/C

Magnitude of electric field intensity, = 3 × 103 N/C

Side of the square, s = 10 cm = 0.1 m

Area of the square, A = s2 = 0.01 m2

The plane of the square is parallel to the y-z plane. Hence, angle between the unit vector normal to the plane and electric field, θ = 0°

Flux (Φ) through the plane is given by the relation,

Φ = 

= 3 × 103 × 0.01 × cos0°

= 30 N m2/C

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