Electricity and magnetism (magnitude of current flowing)

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SUMMARY

The discussion focuses on calculating the current flowing through a tube with a cross-sectional area of 0.0000283 m² and a magnetic field strength of 44.0 x 10^-4 T. The permeability of free space is given as μ₀ = 4π x 10^-7 T·m/A. Additionally, the problem involves a toroidal solenoid with 1000 turns, a central radius of 4.2 cm, and a current of 1.7 A, with the magnetic field calculated using the formula B = (μ₀)(I)/(2π)(r). The resulting magnetic field inside the solenoid is approximately 1.43 x 10^-8 T, although the effect of the solenoid's turns on the magnetic field is questioned.

PREREQUISITES
  • Understanding of electromagnetic theory, specifically Ampère's Law.
  • Familiarity with the concept of magnetic fields and their calculations.
  • Knowledge of the permeability of free space (μ₀) and its significance.
  • Ability to manipulate and apply formulas involving magnetic fields and currents.
NEXT STEPS
  • Study the application of Ampère's Law in different geometries, including toroidal solenoids.
  • Learn about the relationship between current, magnetic field strength, and area in electromagnetic contexts.
  • Explore the effects of solenoid turns on magnetic field strength and distribution.
  • Investigate advanced topics in electromagnetism, such as Faraday's Law and its applications.
USEFUL FOR

Students and professionals in physics, electrical engineering, and anyone interested in understanding the principles of electricity and magnetism, particularly in relation to current flow and magnetic fields in solenoids.

swankymotor16
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If the area of a tube is 0.0000283 m, with moving ions contributing to a magnetic field of 44.0x10^-4 T. What is the current flowing through the tube? [permeability of free space 'mu subzero'= 4∏x10^-4].

I don't have a clue of how to start attacking this problem, have a genius professor, but horrible professor.
 
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swankymotor16 said:
If the area of a tube is 0.0000283 m, with moving ions contributing to a magnetic field of 44.0x10^-4 T. What is the current flowing through the tube? [permeability of free space 'mu subzero'= 4∏x10^-4].

I don't have a clue of how to start attacking this problem, have a genius professor, but horrible professor.

radius is 3.0mm
 
A 1000-turn toroidal solenoid has a central radius of 4.2 cm and is carrying a current of 1.7 A. What is the magnitude of the magnetic field inside the solenoid at the central radius? (μ0=4∏×10^-7 T ∙ m/A) r= 4.2cm= 0.042m

B=(μ0)(I)/(2∏)(r) ⇔ (4∏×10^-7)(1.7)/(2∏)(0.042) ⇔ 1.43x10^-8 T? Or does the 1000-turn toroidal affects in the magnetic field in some sort of a way?
 

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