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A copper wire has resistance R. If its radius is reduced to half while keeping the length constant, what will be the new resistance?
2R
4R
R
16R
4R
Practice and solve "A copper wire has resistance R. If its radius is reduced to half while keeping the length constant, ..." for Mathematics - Previous Year Paper 2024. The correct answer is Option B: 4R. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.
Practice and solve "A copper wire has resistance R. If its radius is reduced to half while keeping the length constant, ..." for Mathematics - Previous Year Paper 2024. The correct answer is Option B: 4R. Detailed step-by-step solution, conceptual clarity, and formulas on Examoogle.