charge density is vector or scalar

Question

eric_d · Answer

It should be scalar

eric_d · Answer

scalar quantity has only magnitude. Vector has magnitude and direction

eric_d · Answer

Charge density is one of the example of scalar quantities in newtonian mechanics!

anonymous · Answer

thank u very much. but i need more explanation?

eric_d · Answer

I don't learn this in detail. That's the best , I can give you..

abhisar · Answer

@eric_d Even a scalar quantity can have both direction and magnitude, for example current. The definition of a vector quantity
A quantity which has both direction and magnitude and follow the rule of vector addition is called as a vector quantity.

eric_d · Answer

Thanks for correcting me
@Abhisar

abhisar · Answer

|dw:1403694184642:dw|

abhisar · Answer

Here, current has both direction and magnitude but its not a vector quantity

somy · Answer

Density = mass/volume 
both mass and volume are Scalar quantity because there is no 'direction', only magnitude 
thus density is scalar

fwizbang · Answer

@Abhisar  Current is the flux of current density thru a surface and is definitely a scalar, but it doesn't really have a direction. The direction you're referring to is the direction of the current density, which is a vector.