Dimensional formula of Elementary charge

How to get the dimensional formula of elementary charge

1. Start from the definition: elementary charge = electric charge.
2. electric charge = electric current × time, so electric charge is [A] × [T] = [T A].
3. Put in the dimension of each part: [T A].
4. Add the powers of each base quantity: [T A].

Quantities with the dimensions [T A]

• Electric charge

Equal dimensions do not make them the same quantity. Compare elementary charge with the others in the full grid.

Three questions on elementary charge

Related quantities

• G Gravitational constant [M⁻¹ L³ T⁻²]
• c Speed of light [L T⁻¹]
• h Planck's constant [M L² T⁻¹]
• ħ Reduced Planck's constant (h-bar) [M L² T⁻¹]
• k Boltzmann constant [M L² T⁻² K⁻¹]
• R Universal gas constant [M L² T⁻² K⁻¹ mol⁻¹]