QUESTION 1 Millikan and Harvey set out to measure- A. the diameter of oil droplets under an electric force.
B. the value of the elementary charge.
C. the force of gravity on oil.
D. O the viscosity of air at various temperatures.

(its a multiple choice, but only ones right.)

The space within which a test north pole experiences a force magnetic poles 2. a powerful stream of electrons flowing high above the earth in the ionosphere electrojet 3. a concept to explain the directional nature of a magnetic field field lines 4. coil of wire designed to produce a magnetic field by a current passing through its windings ionosphere 5. that region above the earth's atmosphere where particles exist in an ionized state magnetic field 6. the extremities of a magnet where the field lines tend to converge or concentrate aurora borealis 7. a phenomenon that occurs in the northern latitudes; the northern lights solenoid