Matter & Interactions 2nd ed. Practice Problems Aaron Titus | High Point University home
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 2g30002     An electron deflected by charged plates.     2g30002 View Question | View Solution | Download pdf| View Video An electron enters a region of uniform electric field between two closely spaced, oppositely charged plates as shown below with an initial speed of m/s. Upon exiting the region, it has been deflected upward. The horizontal displacement of the electron through the plates is 5 cm, and the plates are separated a distance 5 mm. Figure: An electron deflected by oppositely charged plates. Sketch the electric field between the plates. Which plate is positively charged and which plate is negatively charged? Which plate is at a higher electric potential ? Sketch the path of the electron as it travels through the plates. If the vertical deflection of the electron is 1 mm, what is the potential difference across the plates?
 2g30001     Acceleration of an alpha particle by charged plates     2g30001 View Question | View Solution | Download pdf| View Video An alpha particle is accelerated by two closely spaced, oppositely charged plates, as shown below. Figure: An alpha particle moving between oppositely charged plates. The alpha particle has a speed of m/s when it enters a slit in the positively charged plate. After traveling for 1 mm, it passes through a slit in the negatively charged plate. If the magnitude of the charge of each plate is , and if each plate has an area of , what will be the speed of the alpha particle when it reaches the negatively charged plate? (Note: the plate separation is small compared to the dimensions of the plates.)
 2g50001     Potential difference between points near a thin, very long, uniformly charged rod     2g50001 View Question | View Solution | Download pdf A thin rod of length has a uniform charge . (a) Write an expression for the potential difference , if points A and B are very close to the rod in comparison to the length of the rod. (b) Find the potential difference if the rod's length is 1 m, the rod's charge is , point A is 1 mm from the rod, point B is 3 mm from the rod, and point C is 3 mm from the rod and 1 mm from point B. Figure: Points near a thin, very long, uniformly charged rod.

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