A curved lens is placed in a uniform electric field, E. The radius of the flat circular area on the left of the lens is R. The optical lens axis is parallel to the field's direction as shown in the image. Find out the electric flux through the curved surface.

Consider a plane surface of area 50 mm² in a uniform electric field of magnitude 25 N/C. The angle between the electric field and the normal to the surface is φ. Determine the values of angle φ for which the electric flux magnitude through the surface is i) maximum or ii) minimum.

A planar square surface with an area of 0.300 m² is immersed in a uniform electric field of magnitude 20 N/C. The normal to the square surface forms an angle of φ = 45° with the electric field. i) Calculate the electric flux (Φ_E) through the surface. ii) Why is the electric flux independent of the geometrical shape of the surface?

A uniform magnetic field that has a magnitude strength value of about 7 x 10⁻³ T passes through a rectangle that has the following dimensions: a width that is equal to 12 cm and a height that is equal to 18 cm. What would be the magnetic flux in the face of this rectangle at an angle equivalent to 60 degrees about these field lines?