4. Derive Snell's law by requiring that the tangential electric field be continuous at the boundary between an interface between two materials that have different indices of refraction.
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- 4. Determine the equation for the electric field at the origin caused by a surface charge distribution with density Ps = cose located on the surface of a sphere at radius = 2m. It would be wise for you to consider the symmetry of the problem, such that only the z-component is non-zero. The x and y component should cancel out (convince yourself of this!).4. Based on the attached image.. Find the magnitude of the electric field this disc produces at a point P on the axis of the desk a distance of 3.00 cm from it center. Suppose that the charge were all pushed away from the center and distributed uniformally on the outer rim of the disk. Find the magnitude of the electric field at point P. If the charge is all brought to the center of the disk, find the magnitude and direction of the electric field at point P. If Q1= 8x 10 -8)CQ2=3x10^(-8) C,L1 5cm 12- 5cm, The electric field at point p, E= LI L2 Q1 Q2 Select one O a 1.8 x 1015N O b, 5.4 x 10A5( NC O c.0 O d. 3.9 x 10A5 (-) N/C O e. 3.9 x 105 () NO PREVIOUS PAGE NEYT PACE REDMI NOTE 9 PRO ZATAB_26
- (12-15) Consider two concentric conducting spherical shells. Inner shell carries an excess charge of +2 µC and outer shell carries +2 µC. In the figure, the inner shell has an inner radius of 0.1 m and an outer radius of 0.2 m, and the outer shell has an inner radius of 0.38 m and an outer radius of 0.5 m. d6. Suppose a small box is placed at the point (1, 2, –1) in the vector field F = ' (x, y°, z³). The outward flux across the boundaries of the box is (a) positive. (b) zero. (c) negative.At what angle do electric lines of force enter and leave a charged surface for maximum electric flux? Select one: a. 60° b. 0° c. 90° d. 30°