Magnetic Field of an Infinite Straight Current - Carrying Wire
Formula: B = (μ₀ I)/(2π a). Conditions: Infinite straight wire, steady current I, vacuum or non - magnetic medium, perpendicular distance a from the wire. Expl…
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: Infinite straight wire, steady current I, vacuum or non - magnetic medium, perpendicular distance a from the wire. Explanation: This is the integral result of the Biot - Savart law for an infinite straight wire. The field direction is given by the right - hand grip rule: grasp the wire with the thumb pointing in the current direction, the curled fingers indicate the field direction.
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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