Circle the correct answer for each question. 1. An electron carries (K) a) positive charge b) negative charge c) neutral charge d) all of the above c) none of the above 2. The magnetic force acting on a conducting wire is directly proportional to the (K) a) current b) length of the conductor c) angle between the current and the magnetic field d) magnetic field strength e) All of the above 3. The elementary charge is (K) a) the smallest unit of charge b) the charge of an electron c) the charge of a proton d) equal to 1.6 x 10-"9 C e) all of the above 4. A unit of magnetic field Tesla (T) is equal to (K) a) N.s/C.m b) N-m/C.s c) N-C/m-s d) N-s/A.m e) c. and d.6. Which of the following diagrams represents the field of force around a negative point charge? (K) a b. 7. If point charge -q was absent, the electric field at point X would be E. What is the electric field between the two point charges, +q and -q, at point X which lies at the midpoint between the two charges? (K) O- -- O a. 2E [right] . [left] b. 0 [right] c. 2E [left] 8. A conductor is located between the poles of a horseshoe magnet. Current flows in the direction indicated by the arrow on the diagram. (K) N S horseshoe magnet Conductor In which direction will the conductor move? a. upward d. right b. left e. out of the page c. downward