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The property of a material which opposes the production of magnetic flux is called
- a)Permittivity
- b)Permeance
- c)Both (A) and (B)
- d)Reluctance
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
The property of a material which opposes the production of magnetic fl...
Reluctance
Reluctance is the property of a material which opposes the production of magnetic flux. It can be thought of as the magnetic equivalent of resistance in an electrical circuit. Reluctance is denoted by the symbol R and is measured in units of ampere-turns per weber (At/Wb).
Explanation:
When a magnetic field is applied to a material, it induces a magnetic flux. The ease with which this flux is established in the material is determined by its reluctance. Reluctance is influenced by several factors, including the material's composition, structure, and dimensions.
Factors affecting reluctance:
1. Material: Different materials have different reluctance values. Materials with high reluctance impede the flow of magnetic flux, while materials with low reluctance allow for easier flow.
2. Geometry: The shape and dimensions of a material also affect its reluctance. For example, longer and narrower paths tend to have higher reluctance than shorter and wider paths.
3. Cross-sectional area: The larger the cross-sectional area of a material, the lower its reluctance. This is because a larger area provides more space for the magnetic flux to flow through.
4. Length: The longer the path through which the magnetic flux travels, the higher the reluctance. This is because a longer path offers more resistance to the flow of flux.
5. Permeability: Permeability is a measure of how easily a material can be magnetized. Materials with high permeability have low reluctance, as they allow for efficient flow of magnetic flux.
Relation to other properties:
Reluctance is related to two other properties of materials: permeance and permeability.
- Permeance (symbol P) is the reciprocal of reluctance and is measured in units of webers per ampere-turn (Wb/At). It represents the ease with which magnetic flux can flow through a material.
- Permeability (symbol μ) is a measure of how easily a material can be magnetized. It is related to the permeance and reluctance through the equation P = μA/l, where A is the cross-sectional area and l is the length of the material.
So, the correct answer to the given question is option D: Reluctance.
Reluctance is the property of a material which opposes the production of magnetic flux. It can be thought of as the magnetic equivalent of resistance in an electrical circuit. Reluctance is denoted by the symbol R and is measured in units of ampere-turns per weber (At/Wb).
Explanation:
When a magnetic field is applied to a material, it induces a magnetic flux. The ease with which this flux is established in the material is determined by its reluctance. Reluctance is influenced by several factors, including the material's composition, structure, and dimensions.
Factors affecting reluctance:
1. Material: Different materials have different reluctance values. Materials with high reluctance impede the flow of magnetic flux, while materials with low reluctance allow for easier flow.
2. Geometry: The shape and dimensions of a material also affect its reluctance. For example, longer and narrower paths tend to have higher reluctance than shorter and wider paths.
3. Cross-sectional area: The larger the cross-sectional area of a material, the lower its reluctance. This is because a larger area provides more space for the magnetic flux to flow through.
4. Length: The longer the path through which the magnetic flux travels, the higher the reluctance. This is because a longer path offers more resistance to the flow of flux.
5. Permeability: Permeability is a measure of how easily a material can be magnetized. Materials with high permeability have low reluctance, as they allow for efficient flow of magnetic flux.
Relation to other properties:
Reluctance is related to two other properties of materials: permeance and permeability.
- Permeance (symbol P) is the reciprocal of reluctance and is measured in units of webers per ampere-turn (Wb/At). It represents the ease with which magnetic flux can flow through a material.
- Permeability (symbol μ) is a measure of how easily a material can be magnetized. It is related to the permeance and reluctance through the equation P = μA/l, where A is the cross-sectional area and l is the length of the material.
So, the correct answer to the given question is option D: Reluctance.
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Community Answer
The property of a material which opposes the production of magnetic fl...
Reluctance opposes the passage of magnetic flux lines. Reluctance is analogous to resistance.
We can define reluctance as,
The reluctance of the magnetic circuit depends on
- Length
- Area
- Nature of material
Important Points
- Conductance is a property of a conductor that allows the flow of current through it
- Resistance is a property of a conductor that opposes the flow of current through it
- Reluctance is a property of a conductor that opposes the passage of magnetic flux lines through it
- Permeance is a property of a conductor that allows the passage of magnetic flux lines through it
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