Electricity: Static Electricity
Static Electricity: Audio Guided Solution
Problem 1:
Determine the quantity of charge on …
a. … a plastic tube which has been rubbed with animal fur and gained 3.8x109 electrons.
b. … a vinyl balloon which has been rubbed with animal fur and gained 1.7x1012 electrons.
c. … an acetate strip which has been rubbed with wool and lost 7.3x108 electrons.
a. … a plastic tube which has been rubbed with animal fur and gained 3.8x109 electrons.
b. … a vinyl balloon which has been rubbed with animal fur and gained 1.7x1012 electrons.
c. … an acetate strip which has been rubbed with wool and lost 7.3x108 electrons.
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a. 6.1x10-10 C (of negative charge)
b. 2.7x10-7 C (of negative charge)
c. 1.2x10-10 C (of positive charge)
b. 2.7x10-7 C (of negative charge)
c. 1.2x10-10 C (of positive charge)
- 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.
- 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 = ???.
- Use physics formulas and conceptual reasoning to plot a strategy for solving for the unknown quantity.
- Identify the appropriate formula(s) to use.
- Perform substitutions and algebraic manipulations in order to solve for the unknown quantity.
Get more information on the topic of Static Electricity at The Physics Classroom Tutorial.
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