Find the parameters in a magnetic circuit (ignore the leakage effects)

Click For Summary
SUMMARY

The discussion centers on calculating parameters in a magnetic circuit, specifically addressing the magnetic flux density and reluctance. The formula for magnetic flux density was identified as incorrect due to the assumption that A equals Ac. Additionally, it was emphasized that reluctance and the length of the circuit (lc) must be calculated under the condition where the current (i) remains constant at 800 mA.

PREREQUISITES
  • Understanding of magnetic circuits and their parameters
  • Familiarity with magnetic flux density calculations
  • Knowledge of reluctance in magnetic materials
  • Basic principles of current flow in circuits
NEXT STEPS
  • Review the formula for magnetic flux density in magnetic circuits
  • Study the calculation methods for reluctance in magnetic materials
  • Explore the impact of varying current on magnetic circuit parameters
  • Investigate the relationship between area (A) and effective area (Ac) in magnetic circuits
USEFUL FOR

Electrical engineers, physics students, and professionals involved in designing or analyzing magnetic circuits will benefit from this discussion.

Fatima Hasan
Messages
315
Reaction score
14
Homework Statement
A coil is uniformly wound on a wooden ring (toroid) as shown in Figure 1. It has 600 turns, and the ring’s cross section area is ##1 cm^2##. The total magnetic flux in the ring is 0.2 µWb when the coil carries a current of 800 mA.
When the coil current is raised to 2 A, (assume linear relationship between flux & magnetomotive force ), calculate the followings while ignoring the effects of leakage flux:
a) Flux density in the toroid, B
b) Reluctance of the magnetic flux path, R
c) Mean length of the flux path, lc
d) Magnetic field intensity in the core, Hc
e) Flux linkage of the coil.
Relevant Equations
Equations are attached below.
solution.gif


That was my attempt , but I am not sure if my answer is correct or not .
I want to confirm it .
 

Attachments

  • Equations.gif
    Equations.gif
    1.6 KB · Views: 300
  • figure 1.JPG
    figure 1.JPG
    34.5 KB · Views: 291
Physics news on Phys.org
The magnetic flux density formula is not correct since A=Ac
The reluctance and lc-you have to calculate it in previous conditions when i=800 mA-stay the same.
 

Similar threads

Engineering Determine the shunt field current in a magnetic circuit
  • · Replies 5 ·
Replies
5
Views
2K
Engineering How to calculate rotor flux of the three phase squirrel cage induction motor?
  • · Replies 4 ·
Replies
4
Views
3K
Engineering H-parameter model for non-inverting amplifier
  • · Replies 4 ·
Replies
4
Views
2K
Engineering LR circuit current calculation
  • · Replies 2 ·
Replies
2
Views
977
How to Calculate the Complex Op Amp in Circuit Diagram
  • · Replies 8 ·
Replies
8
Views
3K
Engineering Analyzing the inductor current in the circuit
  • · Replies 1 ·
Replies
1
Views
2K
Engineering Active and reactive effect in AC circuit
  • · Replies 2 ·
Replies
2
Views
1K
Engineering Create a circuit in simulation to prove my work (2 batteries and 1 lamp bulb)
  • · Replies 5 ·
Replies
5
Views
2K
Engineering Parameters of transformers: open and short-circuit tests
  • · Replies 20 ·
Replies
20
Views
5K
Engineering Maximal effect in an AC circuit
  • · Replies 4 ·
Replies
4
Views
1K