The square surface shown in the figure measures 3.7 mm on each side. It is immer

Question

The square surface shown in the figure measures 3.7 mm on each side. It is immersed in a uniform electric field with magnitude E = 1400 N/C. The field lines make an angle of ? = 35

The square surface shown in the figure measures 3.7 mm on each side. It is immersed in a uniform electric field with magnitude E = 1400 N/C. The field lines make an angle of ? = 35 degree with a normal to the surface, as shown. Take the normal to be directed "outward," as though the surface were one face of a box. Calculate the electric flux through the surface.

Explanation / Answer

flux =EAcos35

   = 1400 x (3.7 x 10-3)^2 x cos35 = 0.0157

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