Current Growth due to Magnetic Induction

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SUMMARY

The discussion centers on the factors affecting the rate of growth of current when an electromotive force (emf) is induced in a coil, specifically referencing Faraday's Law and Lenz's Law. It is established that an increase in the rate of change of magnetic flux through a solenoid results in a higher induced emf. Additionally, moving a magnet towards or away from the solenoid at a faster rate enhances the induced current. Understanding these principles is crucial for analyzing electromagnetic induction effectively.

PREREQUISITES
  • Understanding of Faraday's Law of Electromagnetic Induction
  • Familiarity with Lenz's Law
  • Basic knowledge of magnetic flux
  • Calculus fundamentals for analyzing rates of change
NEXT STEPS
  • Study the mathematical formulation of Faraday's Law
  • Explore practical applications of Lenz's Law in electromagnetic systems
  • Investigate the effects of varying magnetic field strengths on induced emf
  • Learn about the role of coil design in electromagnetic induction
USEFUL FOR

Students in physics, educators teaching electromagnetic theory, and engineers working with electromagnetic systems will benefit from this discussion.

UncertaintyAjay
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What factors affect the rate of growth of current when an emf is induced in a coil?
 
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UncertaintyAjay said:
What factors affect the rate of growth of current when an emf is induced in a coil?

First things first. Do you know about Faraday's law? And if you do, what do you understand from it?

It will be nice from now on if you provide MORE background of what you already know, rather than post a question like this and forcing us to figure out what you know after several leading posts. You should already know that this is what we need after more than 200 post on PF.

Zz.
 
Right. My bad. Yes I do know Faraday's law- rate of change of magnetic flux is the negative of induced emf. So basically, if I increase the rate at which flux through the solenoid increases or decreases, the induced emf is higher. So if you move a magnet towards or away from a solenoid, moving it faster increases the emf induced.The direction of the induced current is such as to oppose the change that produced it- that's Lenz's Law.

In case you're wondering, I am familiar with calculus. I'll be finishing high school in a couple months so that might also give you a rough idea of what I know.
 

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