Current Density

Here, the current density is not being asked for,
but the current.

Therefore, think about how the formula has to be rearranged.
If the current density and the conductor cross-section are known,
the current can be calculated from them.

Step-by-step guide:

The given values are the
current density of 6 A/mm² and
the conductor cross-section of 2 mm².

The basic formula is:
current density = current divided by conductor cross-section.

The current is required.
Therefore, the formula is rearranged:
current = current density multiplied by conductor cross-section.

Substituting the values: 6 A/mm² × 2 mm².
The calculation gives: 6 × 2 = 12.
The current is 12 A.