Resistance of a wire is yΩ. The wire is stretched to triple its length, then the resistance becomes
A. y/3
B. 3y
C. 6y
D. y/6
Answer:A
Resistance of a wire is yΩ. The wire is stretched to triple its length, then the resistance becomes
A. y/3 B. 3y C. 6y D. y/6
Explanation: Resistance of a conductor is directly proportional to its length. That is, when the length of conductor is tripled, its resistance also gets tripled.