The Planck current is the unit of electric current, denoted by IP, in the system of natural units known as Planck units.
≈ 3.479 × 1025 A
where:
is the Planck charge
is the Planck time
= permittivity in vacuum
is the reduced Planck constant
G is the gravitational constant
c is the speed of light in vacuum.
The Planck current is that current which, in a conductor, carries a Planck charge in Planck time.
Alternatively, the Planck current is that constant current which, if maintained in two straight parallel conductors of infinite length and negligible circular cross-section, and placed a Planck length apart in vacuum, would produce between these conductors a force equal to a Planck force per Planck length.
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