Planck current
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The Planck current is the natural unit of electrical current, denoted by Ip.
<math> I_p = q_p/t_p = (c^6 4 \pi \varepsilon_0 / G )^ \frac{1}{2} <math> ≈ 3.479 × 1025 A
where:
<math>q_p = (c \hbar 4 \pi \varepsilon_0 )^ \frac{1}{2} <math> is the Planck charge
<math>t_p = (\hbar G/c^5)^ \frac{1}{2} <math> is the Planck time
<math>\varepsilon_0<math> = permittivity in vacuum
<math>\hbar<math> is Dirac's constant
G is the gravitational constant
c is the speed of light in vacuum.
Planck current is that current in conductor, which carry Planck charge during Planck time.
Planck current is that constant current which, if maintained in two straight parallel conductors of infinite length, of negligible circular cross-section, and placed Planck leght apart in vacuum, would produce between these conductors a force equal to Planck force per Planck lenght.