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1. The electric resistance R of a wire varies directly as its length Land inversely as its cross-sectional area A. Find the relation between resistance, length and area for a wire that has a resistance of 0.180 2 for a length of 52.0 m and cross-sectional area of 0.00670 cm2. (4 marks)

1. The electric resistance R of a wire varies directly as its length Land inversely as its cross-sectional area A. Find the relation between resistance, length and area for a wire that has a resistance of 0.180 2 for a length of 52.0 m and cross-sectional area of 0.00670 cm2. (4 marks)

Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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1. The electric resistance R of a wire varies directly as its length Land inversely as its cross-sectional area A. Find the relation between resistance, length and area for a wire that has a resistance of 0.180 2 for a length of 52.0 m and cross-sectional area of 0.00670 cm2. (4 marks)
Transcribed Image Text:1. The electric resistance R of a wire varies directly as its length Land inversely as its cross-sectional area A. Find the relation between resistance, length and area for a wire that has a resistance of 0.180 2 for a length of 52.0 m and cross-sectional area of 0.00670 cm2. (4 marks)
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