Q. The electric field $E$ , current density $J$ and conductivity $σ$ of a conductor are related as

2398 202 Current Electricity Report Error

A

$σ = E / J$

13%

B

$σ = J / E$

77%

C

$σ = J^{2} E$

6%

D

$σ = \frac{1}{J E}$

4%

Solution:

$J = σ E$ or $σ = J / E$