A electric current passes through non uniform cross-section wire made of homogeneous and isotropic meterial. If the `j_(A)` and `J_(B)` be the current densities and `E_(A)` and `E_(B)` be the electric field intensities at `A` and `B` respectively, then

Options

A. `j_(a) gt j_(B) , E_(A) gt E_(B)`
B. `j_(a) gt j_(B) , E_(A) lt E_(B)`
C. `j_(a) lt j_(B) , E_(A) gt E_(B)`
D. `j_(a) lt j_(B) , E_(A) lt E_(B)`

Answer

A

Explanation

(a) `(I)/(A) gt J_(B)` and `j = (E)/(rho)`
`:. J_(A) gt j_(B)` and `E_(A) gt E_(B)`.