Calculating Flux Density: 400-Turn Coil with GO Steel Core and Current of 500mA

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SUMMARY

The discussion focuses on calculating the magnetic flux density produced by a 400-turn coil with a GO steel core carrying a current of 500mA. The relevant equations include F = IN, Φ = F/Rm, and B = Φ/A. The user identifies that the cross-sectional area (A) is necessary for the calculation of flux density (B). The solution requires determining the magnetic field strength (F) and the resistance of the magnetic circuit (Rm) to find the flux (Φ) and subsequently the flux density.

PREREQUISITES
  • Understanding of electromagnetic principles, particularly Ampere's Law.
  • Familiarity with magnetic flux and its calculations.
  • Knowledge of the properties of GO steel as a magnetic core material.
  • Basic skills in geometry to calculate cross-sectional area.
NEXT STEPS
  • Calculate the cross-sectional area (A) of the coil to proceed with flux density calculations.
  • Research the magnetic permeability of GO steel to determine Rm accurately.
  • Explore the relationship between turns of wire and magnetic field strength in coils.
  • Learn about the applications of magnetic flux density in electrical engineering.
USEFUL FOR

Students in physics or electrical engineering, hobbyists working with electromagnetism, and professionals involved in designing magnetic circuits or coils.

nobunaga
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Homework Statement


A 400 turn coil wound over a length of 30mm has a core GO steel and has a current of 500mA
flowing through it. Find the density of the flux produced.


Homework Equations


N=400, I=0.05, l=0.03 F= IN ; Φ=F/Rm ; B=Φ/A ; Rm=


The Attempt at a Solution



F=20 At
 
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I believe that " A " is missing
A = the cross sectional area in metres squared
 

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