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The property of a material which opposes the production of magnetic flux in it is known as:
- a)mmf
- b)permeance
- c)permittivity
- d)reluctance
Correct answer is option 'D'. Can you explain this answer?
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The property of a material which opposes the production of magnetic fl...
Resistance in electrical circuit corresponds to reluctance in magnetic circuit. Reluctance opposes the production of magnetic flux in a magnetic circuit and resistance opposes the flow of current in electrical circuit.
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The property of a material which opposes the production of magnetic fl...
Reluctance
Reluctance is the property of a material that opposes the production of magnetic flux in it. It is analogous to resistance in an electrical circuit, but for magnetic circuits.
Definition
Reluctance is defined as the ratio of magnetomotive force (MMF) to magnetic flux. It is denoted by the symbol R and is measured in units of ampere-turns per weber (AT/Wb).
Mathematical Representation
The reluctance of a magnetic circuit can be calculated using the formula:
R = l / (μ*A)
where:
R = reluctance
l = length of the magnetic circuit
μ = permeability of the material
A = cross-sectional area of the magnetic circuit
Relationship with Permeance
Reluctance is inversely proportional to permeance, which is the measure of how easily a material can conduct magnetic flux. Permeance is the reciprocal of reluctance.
Application
Reluctance is an important parameter in the design and analysis of magnetic circuits, such as transformers, motors, and generators. By controlling the reluctance of a magnetic circuit, engineers can optimize the efficiency and performance of electromagnetic devices.
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The property of a material which opposes the production of magnetic flux in it is known as:a)mmfb)permeancec)permittivityd)reluctanceCorrect answer is option 'D'. Can you explain this answer?
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