NEET Physics Ohm's Law MCQ Question
Which of the following combinations correctly describe the limitations of Ohm's Law?
Ohm's Law is valid for all materials and devices in electric circuits.
In some materials, the relationship between voltage and current is not linear.
Ohm's Law applies only when resistivity does not depend on applied electric field.
Diodes exhibit a linear V-I characteristic similar to resistors.
Correct Answer
Detailed Explanation
Ohm's Law has limitations, particularly in materials like diodes where the relationship between voltage and current is not linear, and in cases where resistivity can depend on the electric field applied. This is highlighted in the NCERT context that discusses deviations from Ohm's Law.
Found an issue with this question?
Related Questions
More from Ohm's Law
More from
Consider a diagram showing a rectangular slab of length \( l \) and area of cross-section \( A \). If the resistance \( R \) of the slab is given by t...
If a Wheatstone bridge is balanced and the resistances are R1 = 10 Ω, R2 = 15 Ω, and R3 = 20 Ω, what should be the value of R4?
A silver wire has a resistance of 2.1 Ω at 27.5 °C and a resistance of 2.7 Ω at 100 °C. What is the temperature coefficient of resistivity of silver?