Question 11 X X = 0 - X1 X2 An isolated, nonconducting sphere is positioned on the -axis between positions , and 2 , as shown. The sphere has charge + Q uniformly distributed throughout its volume. Which of the following pairs of graphs could represent the magnitude of the electric field and the electric potential as functions of c ? =x Vx A X 2 *1 X2 Ex Vx B X1 X2 X1 X2 = x Vx C X 2 *1 X 2 Ex Vx D -F-+- X1 X2 X2 Vx E * 2\fQuestion 23 A small sphere of mass 4.0 g and charge of -6.0 MC is traveling in an electric field. The sphere has a speed of 5.0 at point A, where the electric potential is 5.0 k V. What will the speed of the sphere be at point B, where the electric potential is 8.0 k V? A 3.0 m B 4.0 m S C 5.8 - D 16 m S E 32Question 26 charge on the rod? A thin, nonconducting rod of length L is positioned on the x-axis with its left end at x = 0. The rod is charged and has a linear charge density of ) = 523. Which of the following represents the total A B C 574 D 1573 E 15/4Question 28 S 7.5 cm 5.0 cm R +3.0 uC 75 cm Note: Figure not drawn to scale. The figure shows a uniform line of positive charge of magnitude 3.OuC and length 75 cm. The equation for the electric field a distance a along the perpendicular bisector from the line of length L is E = kQ Point R is 5.0 cm from the line of charge and is positioned 23 ( 2 2 + ( 4 ) " ) 2 along a perpendicular bisector of the line. Point S is also along the bisector and is 7.5 cm from the line. The potential difference between points R and S is most nearly A 139V B 13.5kV C 86.3k V D 99.8k V (E 124k VQuestion 30 X A solid nonconducting sphere is inside a solid nonconducting spherical shell, as shown in the figure. A total charge +@ is evenly distributed throughout the sphere and is also evenly distributed throughout the shell. Which of the following statements is a correct claim about the electric field at point X between the sphere and shell and has a valid supporting statement? A The electric field points to the left, because the electric field from sphere is zero and the electric field from the shell is directed to the left. B The electric field points to the left, because a Gaussian sphere concentric with the sphere A on its surface only encloses the charge on the inner sphere. C The electric field points to the right, because the electric field from the shell has a larger magnitude that the electric field from the sphere. D The electric field is zero, because a Gaussian sphere concentric with the sphere with A on its surface encloses zero net charge. E The electric field is zero, because point X is inside a nonconducting shell