Complete thefollowing statement: When an ebonite rod is rubbed with animal fur, the rod becomes negatively charged as 0 negative charges are transferred from the rod to the fur. 0 negative charges are transferred from the fur to the rod. 0 positive charges are transferred from the rod to the fur. 0 positive charges are transferred from the fur to the rod. 0 negative charges are created on the surface of the rod. Which one of the following statements is true concerning the magnitude of the electric eld at a point in space? Q It is a measure of the electric force per unit charge on a test charge. Q It is a measure of the electric force per unit mass on a test charge. 0 It is a measure of the electric force on any charged object. Q It is a measure of the total charge on the object. Q It is a measure of the ratio of the charge on an object to its mass. An aluminum nail has an excess charge of +3.2 \"C. How many electrons must be added to the nail to make it electrically neutral? 0 2.0 x 1013 O 3.2 x 1016 O 5.0 x 10*14 O 3.2 x 106 O 2.0 x 1019