Electricity: Static Electricity
Static Electricity: Audio Guided Solution
Problem 21:
The electric field between the plates of the cathode ray tube of an older television set can be as high as 2.5x10
4 N/C. Determine the force and resulting acceleration of an electron (m = 9.11x10
-31 kg) as it travels through this electric field towards the television screen.
Audio Guided Solution
Habits of an Effective Problem Solver
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Read the problem carefully and develop a mental picture of the physical situation. If necessary, sketch a simple diagram of the physical situation to help you visualize it.
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Identify the known and unknown quantities; record them in an organized manner. A diagram is a great place to record such information. Equate given values to the symbols used to represent the corresponding quantity - e.g., Q1 = 2.4 μC; Q2 = 3.8 μC; d = 1.8 m; Felect = ???.
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Use physics formulas and conceptual reasoning to plot a strategy for solving for the unknown quantity.
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Identify the appropriate formula(s) to use.
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Perform substitutions and algebraic manipulations in order to solve for the unknown quantity.
Read About It!
Get more information on the topic of Static Electricity at The Physics Classroom Tutorial.
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