Multiple choice general knowledge science & technology

The resistance of a fixed cross-section wire decreases with increase in its length.

  1. True

  2. False
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

This statement is FALSE. The resistance of a wire is directly proportional to its length - as length increases, resistance increases. This is because electrons have to travel through more material, encountering more collisions. Resistance = ρL/A, where L is length - longer L means larger R. The answer correctly identifies this as False.

Keep practicing — related questions