NEET Physics Ohm's Law MCQ Question
Consider a cylindrical conductor with an electric field applied along its length. If the conductor obeys Ohm's law, what must be true about the relationship between the current density and the electric field ?
The current density is directly proportional to the electric field .
The current density is inversely proportional to the electric field .
The current density is independent of the electric field .
The current density has a quadratic relationship with the electric field .
Correct Answer
Detailed Explanation
According to the NCERT context, a conducting material obeys Ohm’s law when the resistivity does not depend on the magnitude and direction of the applied electric field, implying a linear relationship between and .
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