PHYS 102 Lecture Notes - Electric Field, Robert Andrews Millikan, Oil Drop Experiment

• School: McGill University
• Department: Physics
• Course: PHYS 102
• Professor: Zaven Altounian

Document Summary

This is the distance r from the charge q. The electric field lines are straight and therefore the electric field is uniform. An electric battery produces a voltage or potential difference across its terminals. Due to chemical reactions, positive charges accumulate on the positive terminal (anode) and negative charges accumulate on the negative terminal (cathode) If pair of conducting parallel plates are connected to the terminals of a battery, charges are deposited on the plates. A uniform electric field exists between the two plates. Work done in moving a positive charge q from the negative plate to the positive plate is: work done = f * d. Therefore, w = qed where d is the separation between the plates. Inside the two plates, the electric field is uniform (no need for integration) Oil droplets emitted from a narrow nozzle, due to friction, accumulate a negative charge. The droplets are kept in a uniform electric field.