Question

when a current of 40 A flows through a conductor for 10 m^2,then the current density​

Answer 1

Answer:

Determine the current density when 40 Amperes of current is flowing through the battery in a given area of 10 m2. J = 4 A/m2.

Answer 2

Given :  Current of 40 A flows through a conductor of area 10 m^2.

To Find : Current Density

Solution :

Current I = 40A , Aand area A = 10 $\[{m^2}\]$

Current Density is calculated from following formulae

$\[J = \frac{I}{A}\]$

Where,

J =  current density as a vector or its scalar magnitude

I =  Electric current

A =  Area of conducter

Thus, Current Density J is

$\[J = \frac{{40}}{{10}} = 4A/{m^2}\]$

J = 4 $\[A/{m^2}\]$

Hence, current density​ is $\[4A/{m^2}\]$.