A) \[E\propto {{J}^{-1}}\]
B) \[E\propto J\]
C) \[E\propto \frac{1}{{{J}^{2}}}\]
D) \[{{E}^{2}}\propto \frac{1}{J}\]
Correct Answer: B
Solution :
Current density relates with electric field as \[\vec{J}=\sigma \vec{E}=\frac{{\vec{E}}}{\rho };\] where\[\sigma =\]conductivity and \[\rho =\] resistivity or specific resistance of substance.
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