Strength of induced magnetic field inside an inductor

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SUMMARY

The strength of the induced magnetic field inside an inductor is influenced by both the current flowing through the coil and the inductance of the coil itself. The equation B = μnI indicates that the magnetic field strength (B) is directly proportional to the current (I) and the number of turns per unit length (n). Additionally, the wire gauge affects the maximum current capacity before fusing, which is crucial for coil gun applications. A longer coil can increase the acceleration area but does not necessarily enhance the magnetic field strength if the turns per unit length remain constant.

PREREQUISITES
  • Understanding of electromagnetic principles, specifically the right-hand rule
  • Knowledge of inductance and its impact on magnetic fields
  • Familiarity with wire gauge and its effect on current capacity
  • Basic grasp of the equation B = μnI
NEXT STEPS
  • Research the relationship between wire gauge and current capacity in inductors
  • Explore the design principles of coil guns and their efficiency
  • Study the effects of coil length on magnetic field strength and acceleration
  • Learn about advanced electromagnetic field equations and their applications
USEFUL FOR

Electronics enthusiasts, hobbyists building coil guns, and students studying electromagnetism will benefit from this discussion.

warfreak131
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I am trying to make a crude coil gun. I remember that if I run current through a coil of wire, it generates a magnetic field according to the right hand rule. Will the inductance of the coil of wire greatly affect the strength of the magnetic field, or is it mainly due to the strength of the current being run through the coil?

If possibly, can you provide me with a link to a website with more information or some equations?
 
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hi there

both, but remember that the diameter (gauge) of the wire used for the inductor will determine what the max current you can put through it before it fuses.

remember google is your friend ... here's just 1 of 1000's of links on the subject
http://www.allaboutcircuits.com/vol_1/chpt_15/1.html
cheers
Dave
 
thanks! also, let's assume I'm using a certain gauge of wire, and I'm wrapping them as close together. would making a longer coil create a stronger magnetic field? or would it only serve to make a longer acceleration area?

if B=unI, and I am wrapping them to the max tightness along the entire length, n would stay the same right?
 

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