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Q3/ A strain gauge wire is stretched taut has a length of 30 mm and across- sectional area of 0,01 mm, and resistance is

Q3/ A strain gauge wire is stretched taut has a length of 30 mm and across- sectional area of 0,01 mm, and resistance is 1.5 2. The force applied to the wire is increased so that the length becomes 40 mm and the cross-sectional area changed to 0.0073 mm. Find the gauge factor of this strain gauge, where the resistivity of the wire is approximately 5 x 107 2-m. 115

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