Electricity: Electric Circuits
Electric Circuits: Audio Guided Solution
Extra Problem 10:
Use the Table of Resistivity Values to calculate the resistance (in milliOhms) of a piece of nichrome wire 240 cm long with a cross-sectional area of 0.0218 cm2.
Audio Guided Solution
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 you visualize it.
- ... identifies the known and unknown quantities and records them in an organized manner. Equates given values to the symbols used to represent the corresponding quantity - e.g., ΔV = 9.0 V; R = 0.025 Ω; I = ???.
- ... uses physics formulas and conceptual reasoning to plot a strategy for solving for the unknown quantity.
- ... identifies the appropriate formula(s) to use.
- ... performs substitutions and algebraic manipulations in order to solve for the unknown quantity.
Read About It!
The following pages from The Physics Classroom Tutorial may serve to be useful in assisting you in the understanding of the concepts and mathematics associated with these problems.
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