A teacher is showing the class an experiment with electric fields. She connects up two plates to a power supply and puts a candle between the plates.
a. What is an electric field
b. How can you tell that the candle flame contains charged particles?
c. The charge on the plate on the left is negative, and the charge on the plate on the right is positive. What is the charge on the particles in the flame?
d. The teacher carefully moves the candle around between the plates. The candle looks the same. What can you say about the size of the electric field between the plates?