Question
A uniform metal wire of length / has 10 resistance. Now this wire is stretched to a length 2 / and then bent to form a perfect circle. The equivalent resistance across any arbitrary diameter of that circle is
NEET
Physics
Current Electricity
2024
NEET 2024 (Re-NEET)
NEET Physics Question (2024) — Solution
Options
- A. 10
- B. 5
- C. 40
- D. 20
Answer
A. 10
Step-by-step solution
R_0=10 After stretching its length upto 2l R_1=n^2 R_0 =4 R_0 =40 R_ A B = 20 20 20+20 =10
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