Answers to practice exam #1 ---------------------------- 1) there is a rearrangement of the electrons in the ball 2) the object is positively charged 3) L is positive and M is negative 4) both spheres are positively charged 5) at none of these places (there is no place) 6) midway between A and B 7) parallel to the line joining Q and -Q (left) 8) According to Gauss' law... 9) 100 volts 10) III Bonus: V Partial Credit -------------- p7 a) zero b) zero p8 -158,000 volts 1 volt = 1 joule/coulomb and 1 joule = 1 newton.meter V/m or N/C are units of the electric field 6 pF