The square surface shown in Figure 23-26 measures 3.4 mm on each side. It is imm

Question

The square surface shown in Figure 23-26 measures 3.4 mm on each side. It is immersed in a uniformelectric field with magnitude E = 1500 N/C. The field lines make an angle of? = 35

The square surface shown in Figure 23-26 measures 3.4 mm on each side. It is immersed in a uniform electric field with magnitude E = 1500 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

side a = 3.4 mm = 3.4 * 10 ^ -3 m Area A = a ^ 2 = 11.56 * 10 ^ -6 m ^ 2 electric field E = 1500 N / C Angle between E and normal of A is ? =180 - 35 = 145 degrees So, flux = EA cos ? = -1.42 * 10 ^ -2 N m ^ 2 / C side a = 3.4 mm = 3.4 * 10 ^ -3 m Area A = a ^ 2 = 11.56 * 10 ^ -6 m ^ 2 electric field E = 1500 N / C Angle between E and normal of A is ? =180 - 35 = 145 degrees So, flux = EA cos ? = -1.42 * 10 ^ -2 N m ^ 2 / C

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