Electric field (E) and current density `(J)` have relation

Options

A. `J prop E`
B. `E prop J^(2)`
C. `E prop (1)/(J^(2))`
D. `E^(2)prop (1)/(J)`

Answer

A

Explanation

Current density is related with electric field as
`J = sigma E = (E )/(rho)`
`J prop E`