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Flux = Int B dA

Why isn't this written as a double integral when we antidifferentiate over an areal?

Why isn't this written as a double integral when we antidifferentiate over an areal?

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- Thread starter kasse
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- #1

- 384

- 1

Flux = Int B dA

Why isn't this written as a double integral when we antidifferentiate over an areal?

Why isn't this written as a double integral when we antidifferentiate over an areal?

Physics news on Phys.org

- #2

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Forget about Ampere.

- #3

Mentor

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Ampere's Law is a fundamental law in electromagnetism that describes the relationship between the electric current and the magnetic field it produces. It states that the line integral of the magnetic field around a closed loop is equal to the current passing through the loop multiplied by a constant known as the permeability of free space. It is commonly used to calculate the magnetic field produced by current-carrying wires or solenoids.

In single integral Ampere's Law, the line integral is taken along a closed loop in a plane, while in double integral Ampere's Law, the surface integral is taken over a surface bounded by the closed loop. In other words, single integral Ampere's Law is used to calculate the magnetic field along a closed path, while double integral Ampere's Law is used to calculate the magnetic field inside a closed surface.

Yes, Ampere's Law can be applied to any shape of a closed loop or surface as long as the current passing through it is known. However, the calculation may become more complex for non-uniform shapes, and in some cases, the use of other methods such as Biot-Savart Law may be more suitable.

Ampere's Law and Faraday's Law of Induction are both fundamental laws in electromagnetism that are closely related. Ampere's Law describes the relationship between electric current and magnetic field, while Faraday's Law describes the relationship between changing magnetic field and induced electric field. Together, these laws form the basis of electromagnetic theory and are essential for understanding the behavior of electric and magnetic fields in various systems.

Yes, Ampere's Law can be derived from other laws such as Maxwell's equations, which describe the behavior of electric and magnetic fields. Specifically, it can be derived from the fourth Maxwell's equation, also known as the Ampere-Maxwell Law, which accounts for the displacement current and adds another term to Ampere's Law. However, in most practical applications, the simplified form of Ampere's Law is used.

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