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Transcript
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