Question
Physics Question on Resistance
A wire of a certain material is stretched slowly by 10%. Its new resistance and specific resistance becomes respectively
A
1.21 times, same
B
1.1 times, 1.1 times
C
both remains the same
D
1.2 times, 1.1 times
Answer
1.21 times, same
Explanation
Solution
When a wire is stretched, its resistance and specific resistance may change. Let's analyze each option to determine the correct answer:
If the new resistance becomes 1.21 times and the specific resistance remains the same, this implies that the wire's length increased while its cross-sectional area remained constant. Therefore, the correct answer is (A) the new resistance becomes 1.21 times and the specific resistance remains the same.