Hello,

I would like to know how to deduce the amount of current flowing through a solid volume , when current is applied in the form of current density 'J' (A/m2).

Example: As shown in the image attached, the solid body is a rectangular volume which acts as a coil in a electromagnet. In the simulation model I am building , the current flowing through the coil has to be input in terms of current density. The total volume is about 4.5 x e-6 m3 . A current density of 1e6 A/m2 is applied to the body.

As current density J=I/A , if applied to a 2D surface area, it is pretty straight forward to calculate the current flowing through the area.

What is the formulation to calculate the current in amperes for the volume?

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