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Categories: Natural units | Units of electrical current

Planck current

The Planck current is the natural unit of electrical current, denoted by I_p.

$I_p = q_p/t_p = (c^6 4 \pi \varepsilon_0 / G )^ \frac{1}{2}$ ≈ 3.479 × 10²⁵ A

where:

$q_p = (c \hbar 4 \pi \varepsilon_0 )^ \frac{1}{2}$ is the Planck charge

$t_p = (\hbar G/c^5)^ \frac{1}{2}$ is the Planck time

$\varepsilon_0$ = permittivity in vacuum

$\hbar$ is Dirac's constant

G is the gravitational constant

c is the speed of light in vacuum.

See also

Categories: Natural units | Units of electrical current

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