CHECKING YOUR UNDERSTANDING Directions: Solve for the given problems. Show your complete solutions. Express your final answers into 3 significant figures. 1. The terminal voltage of the battery in figure 4 is 16.6 V. What is the resistance R of the external resistor? What is the internal resistance r of the 18.0-V battery? 2. What should be the diameter of an aluminum ire forits resistance to be equal to
CHECKING YOUR UNDERSTANDING Directions: Solve for the given problems. Show your complete solutions. Express your final answers into 3 significant figures. 1. The terminal voltage of the battery in figure 4 is 16.6 V. What is the resistance R of the external resistor? What is the internal resistance r of the 18.0-V battery? 2. What should be the diameter of an aluminum ire forits resistance to be equal to
Chapter7: Electricity
Section: Chapter Questions
Problem 27Q: (Indicates a review question, which means it requires only a basic understanding of the material to...
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Directions: Solve for the given problems. Show your complete solutions. Express your final answers into 3 significant figures.
- The terminal voltage of the battery in figure 4 is 16.6 V. What is the resistance R of the external resistor? What is the internal resistance r of the 18.0-V battery?
- What should be the diameter of an aluminum wire for its resistance to be equal to that of a copper wire which diameter is 2.17 mm? The two wires are of the same length.
ρ (Copper) = 1.68 x 10-8 Ωm
ρ (Aluminum) = 2.65 x 10-8 Ωm
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