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An electron with a speed of 5.0x10^5 m/s enters into an electric field between two parallel plates through a hole in the negative plate and collides with the positive plate with a speed of 5.0x10^4 m/s. what is the potential difference between the plates?

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Related textbook solutions

Physics: Principles with Applications
7th Edition, 2013
Giancoli
ISBN: 9780321625922

Related questions

An electron is projected with an initial speed 1.90×106 {\rm m/s}into the uniform field between the parallel plates in the figure .Assume that the field between the plates is uniform and directedvertically downward, and that the field outside the plates is zero.The electron enters the field at a point midway between the plates.The distance between the two plates is .01m and the length of theplates is .02m

If the electron just misses the upper plate as it emerges from thefield, find the speed of the electron as it emerges from the field?

The electron gun in a TV picture tube accelerates electrons betweentwo parallel plates 1.2 cm apart with a 30 kV potential differencebetween them. The electrons enter through a small hole in thenegative plate, accelerate, then exit through a small hole in thepositive plate. Assume that the holes are small enough not toaffect the electric field or potential.

a)What is the electric field strength between the plates?

b)With what speed does an electron exit the electron gun if itsentry speed is close to zero? Note: the exit speed is so fast thatwe really need to use the theory of relativity to compute anaccurate value. Your answer to part B is in the right range but alittle too big.

An electron (mass m = 9.11E-31 kg) is accelerated in the uniformfield E (E = 1.25E+4 N/C) between two parallel charged plates. Theseparation of the plates is 1.40 cm. The electron is acceleratedfrom rest near the negative plate and passes through a tiny hole inthe positive plate, as seen in the figure below.

Link to figure:
http://spock.physast.uga.edu/res/prenhall/giancoli/Physics-Principles_and_Applications_6e/Chap16/graphics/gian1644.gif

With what speed does it leave the hole?


Show that the gravitational force can be ignored by calculating theratio of the gravitational to the electric force. Calculate thatratio.

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