What is the Electric Field Between Deflection Plates in a TV Tube?

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The discussion focuses on calculating the electric field between deflection plates in a TV tube and the electric field around a charged globe. For the first problem, the force experienced by the electron beam is given, and the electric field can be determined using the relationship between force and charge. The second problem involves a globe acquiring a charge, and the electric field at a specified distance can be calculated using Gauss's law, which simplifies the analysis by treating the charge as uniformly distributed. The participants emphasize the importance of understanding the principles of electric fields in both scenarios. Overall, the thread highlights key concepts in electrostatics and their applications in practical problems.
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Homework Statement


An electron beam in the TV tube is steered across the screen by the field between two charged plates. If the electron experiences a force of 3.ox10(to the negative 6th)N, how large is the field between the deflection plates?



2. Homework Statement
The custodian dusts off a globe with a duster, causing the globe to acquire a charge of -8.0x10(to the negative 9th)C. What is the magnitude and direction of the electric field at a point 0.40m from the center of the charged globe?
 
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For number one: What is the force on a point particle with charge q in a uniform field E?

For number two: Assuming the charge distributes uniformly over the sphere, what simplification can you make? Think Gauss's law.
 

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