CH22.Problems
Electric Fields
JH
Example 3:
Example 4:
Example 5:
Example 14:
Example 17:
Q1 and Q2 cancels due to opposite forces because of direction
Q3 and Q4 cancels due to opposite signs and matching charge to square of distance factor:
52. An electron enters a region of uniform electric field with an initial velocity of 40 km/s in the
same direction as the electric field, which has magnitude E = 50 N/C. (a) What is the speed of
the electron 1.5 ns after entering this region? (b) How far does the electron travel during the 1.5
ns interval?
Answer: a) 27 km/s, b) 5.0×10^-5 m = 50 micro-m