Flux & Physics: Explaining the Constancy of Flux

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SUMMARY

The discussion centers on the constancy of magnetic flux in circuits, specifically addressing the impact of adding a resistor. It is established that while adding a resistor alters the current, the change in flux does not occur instantaneously due to the time constant defined by the L/R ratio in inductive circuits. This concept is crucial for understanding transient responses in electrical circuits.

PREREQUISITES
  • Understanding of L/R time constant in inductive circuits
  • Basic knowledge of Ohm's Law
  • Familiarity with circuit components, specifically resistors and inductors
  • Concept of magnetic flux in electromagnetic theory
NEXT STEPS
  • Study the L/R time constant in detail to grasp transient behavior in circuits
  • Explore the relationship between current and magnetic flux in inductive circuits
  • Learn about the effects of different circuit configurations on flux constancy
  • Investigate practical applications of inductors in real-world circuits
USEFUL FOR

Students studying physics, electrical engineers, and anyone interested in the principles of electromagnetism and circuit analysis.

harsh22902
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This is an excerpt from a high school physics textbook. I don't understand the possible reason behind this statement. If we change something in the circuit say for example add a resistor , the current and hence the flux should change. Then why/how is this statement true?
 
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Correct, but not instantaneously: it takes time. https://www.electronics-tutorials.ws/inductor/lr-circuits.html is ##L/R##
 
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