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Electricity: Static Electricity

Static Electricity: Audio Guided Solution

Problem Set SE2, Question 2:

An object consists of a combination of 7.64 x1015 protons and 5.24 x1015 electrons.
a.  Calculate the amount of net charge possessed by the object. No + or – signs. 
b.  Indicate the type of charge possessed by the object.
 



 

Audio Guided Solution

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Habits of an Effective Problem Solver

An effective problem solver by habit approaches a physics problem in a manner that reflects a collection of disciplined habits. An effective problem-solver...

  • ... reads the problem carefully and develops a mental picture of the physical situation. If necessary, sketches a simple diagram of the physical situation to help visualize it.
  • ... identifies the known and unknown quantities; records them in an organized manner. A diagram is a great place to record such information. Equates 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 = ???.
  • ... uses physics formulas and conceptual reasoning to plot a strategy to solve for the unknown quantity.
  • ... identifies the appropriate formula(s) to use.
  • ... performs substitutions and algebraic manipulations in order to solve for the unknown quantity.


 

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