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What is the unit of magnetic flux?
Weber
Henry
Ampere/metre
Ampere-turn/weber
Weber
Quick Summary: Magnetic flux (represented by the symbol \Phi) is a measure of the quantity of magnetism, taking into account the strength and the extent of a magnetic field. Its SI unit is the Weber (Wb), named after the German physicist Wilhelm Eduard Weber.
Magnetic flux (represented by the symbol ╬ж)is a measure of the quantity of magnetism, taking into account the strength and the extent of a magnetic field. Its SI unit is the Weber (Wb), named after the German physicist Wilhelm Eduard Weber.
╬ж=тИлBтЛЕdA тАФ Total magnetic flux through an area
1┬аWb=1┬аVolt-second тАФ Relationship between flux and induced EMF
Magnetic flux is defined as the surface integral of the normal component of the magnetic flux density (B) over a surface area (A). Mechanically, it represents the total number of magnetic field lines passing through a given surface. According to Faraday's law, a change in magnetic flux over time induces an electromotive force (EMF) in a conductive loop.
One Weber is defined as the magnetic flux that, when changing at a rate of one Weber per second, induces an EMF of one volt in a single-turn circuit.
Magnetic flux density (B) is measured in Tesla (T), where 1┬аT=1┬аWb/m2.
It is a scalar quantity, despite being associated with vector fields.
Provides a simple quantification of magnetic field interaction with circuitry.
Essential for calculating transformer and motor performance parameters.
Cannot be measured directly; typically measured via induced voltage (fluxmeters).
Sensitive to the orientation of the surface relative to the field lines.
Design of electromagnetic induction devices (transformers, inductors).
Used in Hall-effect sensors and magnetic recording media.
Option B (Henry) is the unit of Inductance.
Option C (Ampere/metre) is the unit of Magnetic Field Strength (H).
Option D (Ampere-turn/weber) is the unit of Reluctance.
A is correct тАФ The SI unit of magnetic flux is the Weber (Wb).
Always distinguish between flux (╬ж, Weber) and flux density (B, Tesla) to avoid common calculation errors in machine design problems.