Concept explainers
(a)
With what velocity does the electron strike the positive plate if a cylindrical capacitor is made of two coaxial conductors—the outer one’s diameter is 20.2 mm and the inner one’s diameter is 0.2 mm; the inner conductor is 1000-V positive with respect to the outer conductor?
(a)
Explanation of Solution
Given info:.
Formula used:.
Kinetic energy
Potential energy
Calculation:.
We have,
Conclusion:.
Velocity
(b)
How long does it take the electron to travel the 1-cm distance? Compare the results to those of Problem 2.17.
(b)
Explanation of Solution
Given info:.
Formula used:.
Force
F = ma = qE
Calculation:.
We have force,
For a cylindrical capacitor,
We have,
This value is higher than the value obtained in Problem 2.17
Conclusion:.
Time taken
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