Electric field due to a line of charge: A uniform line charge that has a linear charge density 2 - 14.0 nC/. is on the x-axis between x = 0 to x = 5.0 m. The electric field on the x-axis at 60 m is equal to: O NO Ob. 20 N/C 2 t 104 NÓ Od 4.4 NC Oo. None of the above. Question 2 10 points Save As A dipole of moment 0.50 cnm is placed in a uniform electric field with a magnitude of 4.0 x 10+N/C Defining the potential energy to be zero when the dipole is perpendicular to the electric field, find the potential energy (in) of the dipole in the elecinc nena when the dipole makes an angle of 180.0»with the electric field. 0+32 x 10-24 1.-3.2 x 10-24 06-28 10-27 d. 2.8 x 10-4 O a None of the above Two infinite non conducting sheets of charge are parallel to each other, with sheet A in the x-2,5 m plane and sheet B in the x * +2.5 m plane. The electric field in the region x < -2.5 m, when each sheet has a uniform surface charge density equal to +30 "uc/m² ao O.-3.4 10NC 06:3.4 105 NC Od -6.8 x 10°N/C O. None of the above Question 4 Two charges Qy and Q are a distance d' apart. If the electric field is zero at a distance of 30/4 from Qi (nowneda 2), then what is the relation between ind 037 O 901-02 01-02/3 OQ-302 O Q1-902 None of the above 10 points Question 5 Consider the solid conducting sphere and the concentric conducting spherical shell as shown in the Figure. The spherical shell has a charge 89. The solid sphere has a charge -3Q. How much charge is on the outer surface and how much charge is on the inner surface of the spherical shell? On Because the outer sphere is conducting the field in the thin shell must vanish-rides on the inner surface, and Sides on the other face Ob 3 resides on the inner surface, and resides on the outer surface O c.-3 resides on the inner surface, and resides on the outer surface O d. 3 resides on the inner surface, and -50 resides on the outer surface Oo. None of the above. Question 6 A point charge (q- +2.00 C) is at the center of an imaginary sphere that has a radius equal to 0.500 m. What is the flux of the electric field through the surface of the sphere? O a -2.26 10 Nm/c 0 Ob. Oc 2.26 x 108 Nm/C 1.26 X 10Nm/C Od Oo. None of the above. Question 7 10 points A tiny ball (mass-0.0125 g) carries a charge of -18C. What electric field (magnitude and direction) is needed to cause the ball to float above the ground? O a 6.5 x 10N/C Oь. 6.5 x 10N/C 1.5 X 10' N/C Od 1.5 x 10-N/C e. None of the above. Question 7 10 points A tiny ball (mass-0.012k g) carries a charge of -18 C. What electric field (magnitude and direction) is needed to cause the ball to float above the ground 6,5 x 10 N/C b. 6.5 x 10 N/C Oc 1.5 x 10' N/C Od 1.5 x 10-N/C Oo. None of the above. Question 8 A point particle has a charge equal to +2.00 C and is fixed at the origin. How much work must be done to bring a second point particle that has a charge of +3,00 C from infinity to a distance of 4.00 m from the +2.00-u charge? O a, 0 Ob.4.49 O c. 13,5 J O d. 13,5 mu e. None of the above. Question 9 10 porn The picture tube of a television set was, until recently, invariably a cathode-ray tube, In a typical cathode-ray tube an electron gun arrangement in used to accelerate electrons from rest to the screen. The electrons are accelerated through a potential difference of 300 KV. Which region at higher le porte corte electron's starting location? On Because positively charged objects are accelerated from higher potential to lower potential regions, the screen must be at the lower electric powered Ob. Because positively charged objects are accelerated from lower potential to higher potential regions, the screen must be at the higher actric poterit cadrul c. Because negatively charged objects are accelerated from higher potential to lower potential regions, the screen must be at the higher electric polerter to it. d. Because positively charged objects are accelerated from higher potential to lower potential regions, the screen must be at the higher electric portato Oe. None of the above Question 10 A uniform electric field has a magnitude 2.00 kV/m points in the +x direction. What is the electric potential difference between the x = 0.00 m plane and the x = 4.00 m plane? V(4.00m) - Vo.com) - O a. 8.00 KV O b.- 8.00 KV O co O d. 8.00 V e. None of the above.