Please help me answer the following:

2. A charged ball B of finite mass is suspended in equilibrium by a string at an unknown angle with respect to the vertical, as shown below. The ball is surrounded by a horizontal external electric field (not shown in the figure). B Which of the following statements could be true? (a) The ball is negatively charged, and the external electric field is directed rightward. The ball is positively charged, and the external electric field is directed leftward. Both (a) and (b) Neither (a) nor (b)3. A positive charge is held at rest, while a negative charge travels directly away from the positive charge. The negative charge is moving in the direction of electric potential, and the magnitude of the electric force on the negative charge (a) decreasing, increases decreasing, decreases C increasing, increases d increasing, decreases 4. A 75-turn circular loop carries a current of 6.3 kA and produces a magnetic field of magnitude 1.3 T at its center. What is the approximate diameter of this loop? a 7.3 cm 15 cm ZTIR 23 cm qb d 46 cm $7. 1 26 mm B = NVOI 2 R JE Ism thatward5. shown below. A beam of electrons is directed toward a horizontal wire caffying a rightward current, as NUOI 25 - 23 Electron direction 01 = 23.2 a out of the page In what direction is the electron beam deflected? (Neglect the effect of gravity.) = 46 G into the page (C) leftward (d rightward