What is Ampere Law

Question

What is Ampere Law

Accepted Answer

Ampere's Law relates the magnetic field around a closed loop to the current passing through the loop.

Ampere's Law states that the magnetic field around a closed loop is proportional to the current passing through the loop.
It is one of Maxwell's equations in electromagnetism.
The law is often used to calculate the magnetic field produced by current-carrying conductors or solenoids.
Ampere's Law can be written in integral form as ∮B⋅dl = μ0I, where B is the magnetic field, dl is an infinitesimal element of length along the closed loop, μ0 is the permeability of free space, and I is the current passing through the loop.