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Questions and Answers
What is the weight of Problem Sets in the overall grading?
What is the weight of Problem Sets in the overall grading?
What percentage does each in-class test contribute to the overall grading?
What percentage does each in-class test contribute to the overall grading?
What is the deadline for Test 1?
What is the deadline for Test 1?
What does Coulomb's Law describe?
What does Coulomb's Law describe?
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Coulomb's Law states that the force on Q is given by F = K q'Qi, where K = _____ Nm²/C².
Coulomb's Law states that the force on Q is given by F = K q'Qi, where K = _____ Nm²/C².
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Superposition involves adding up the forces in a system.
Superposition involves adding up the forces in a system.
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What is the SI unit of charge?
What is the SI unit of charge?
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Study Notes
Electromagnetics Course Information
- The course, PHYS 5020: Electromagnetics, is taught by Eric Hessels, who can be reached at [email protected]
- The course meets in PSE 201
- Assessments include:
- Problem sets (10% of the final grade)
- Two in-class tests (25% each, with a deadline of 29 hours before class)
- Final exam (10% of the final grade)
- The first in-class test is scheduled for October 7th
- Students are advised to review Chapter 1 for this weekend
Coulomb's Law
- Coulomb's Law describes the force between two point charges
- The force experienced by charge Q due to charge q' is:
- F = K q'Q / r^2
- SI units for K: K = 1 / (4πε₀) = 8.85x10^-12 /Nm^2
- Superposition states that the total force on a charge is the vector sum of the forces due to each individual charge in the system
- In the case of a line charge, the force is calculated by integrating over the charge distribution along the line
Example Calculation
- The example considers a line charge with charge density λ, extending along the y-axis
- The force on a charge Q at point (x,0,0) is calculated by integrating contributions from each infinitesimal charge element along the line
- The infinitesimal charge element, dq', is expressed as λ dl', where dl' is the infinitesimal length along the y-axis
- The distance r between the charge Q and the charge element is calculated using the Pythagorean theorem
- The integral is then evaluated to obtain the net force on charge Q
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Description
This quiz tests your understanding of Coulomb's Law as part of the Electromagnetics course, PHYS 5020. Review Chapter 1 to prepare for questions on the force between point charges and the principle of superposition. Good luck on your assessments and in-class tests!
