The boldfaced j is a vector whose magnitude is.

Current density is typically represented with. Yes, current density in the cylindrical wire is uniform (b). A density difference can exist between two fluids or. A represents the surface area.

Find out the current density. The direction of current density is taken to be the same as the direction of motion of the positive charge. This is a vector quantity with both a magnitude (scalar) and a direction.

Where, j is the current density (a/m. Current density formula can be expressed as, j = where, solved examples: When there is a current, electrons move near the speed of light through a.

That should give you a good overview of. Advertisement corrosionpedia explains current density current density can be expressed by the formula: Verified by toppr correct option is c) current density is a vector quantity and is defined as the the current flowing per unit area of cross section flowing perpendicular to cross section.

This is a convention in keeping with the conventional direction of the current. J is the symbol used to represent the current density current density has magnitude and direction, so it is a vector quantity. The direction represents the direction the current flows, and the magnitude gives the current per.

Increasing this area allows for a greater current, which is why a wire's resistance is inversely proportional to that area. Dimensional formula of current density. A 15 mm² copper wire has a current of 5 ma of current, which is flowing through it.