NEETPhysics-Electricity
NEET Physics Resistance MCQ Question
Type: MCQ-numerical-Medium-Class 12
The resistance of a wire is 10 Ω. Its length is increased by 10% by stretching. The new resistance will now be
A
12 Ω
B
2 Ω
C
13 Ω
D
11 Ω
Correct Answer
Option A
Detailed Explanation
Resistance is proportional to the square of the length when volume is constant. Increasing length by 10% increases resistance by 21%, making it 12 Ω.
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