Magnetic Field of an Infinite Straight Wire
Formula: B = (μ₀ I)/(2π a) Conditions: An infinitely long straight wire carrying a steady current I, in vacuum or air, at a perpendicular distance a from the w…
Syllabus path: Electromagnetism › Magnetic Field › Magnetic Flux Density
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CSCA Physics Formula Reference
Formula and explanation
Formula: B = (μ₀ I)/(2π a) Conditions: An infinitely long straight wire carrying a steady current I, in vacuum or air, at a perpendicular distance a from the wire. Explanation: An important result derived from the Biot - Savart Law. The direction of the magnetic field is given by the right - hand rule: Grasp the wire with your right hand, thumb pointing in the direction of the current, and your fingers curl in the direction of the magnetic field.
Related tutorial and examples
Magnetic Flux Density
Topic: Electromagnetism > Magnetic Field > Magnetic Flux Density 1. Core Concept: Magnetic Flux Density ( B ) Magnetic Flux Density describes the strength and direction of a magnetic field (Vector). Physical Meaning: Analogous to Electric Field Strength E, it describes the force …
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