Which of the following statements are correct?
(A) Resistance is a property that resists the flow of electrons in a conductor.
(B) The resistance of a conductor depends on the material of the conductor.
(C) The resistance of a conductor depends inversely on its length.
(D) The resistance of a conductor depends inversely on its area of cross-section.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → (A), (B) and (D) only
Resistance does oppose the flow of electrons (A), and it depends on the material through its resistivity (B). It also varies inversely with the area of cross-section (D) — a thicker wire offers less resistance.
Statement C is wrong, because R = ρl/A shows that resistance is directly proportional to the length, not inversely.