A material 'B' has twice the specific resistance of 'A'. A circular wire made of 'B' has…
Physics · NEET · NTA Exams — Current Electricity
A material 'B' has twice the specific resistance of 'A'. A circular wire made of 'B' has twice the diameter of a wire made of 'A'. Then for the two wires to have same resistance, the ratio LB / LA of their respective lengths must be
- 1
- \(\frac{1}{2}\)
- \(\frac{1}{4}\)
- 2
Answer
(B) 1 2
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