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Which of the following represents Ohm's law for a conducting material? |
$R=VI$ $\vec J =σ\vec E$ $\vec j = ρ\vec E$ $I= RV$ |
$\vec J =σ\vec E$ |
The correct answer is Option (2) → $\vec J =σ\vec E$ $\vec J =σ\vec E$ It is a microscopic form of ohm's law- $\vec J$ = Current density $(A/m^2)$ $σ$ = Electrical conductivity of material $\vec E$ = Electric field |
