A resistance strain gauge is used to measure the stress of steel which is stressed to 1200 kg/cm2. If the gauge factor is 2.5 and Young’s modulus of steel is 2 x 106 kg/cm2, the percentage change in resistance of the gauge is

A resistance strain gauge is used to measure the stress of steel which

1.	A resistance strain gauge is used to measure the stress of steel which is stressed to 1200 kg/cm2. If the gauge factor is 2.5 and Young’s modulus of steel is 2 x 106 kg/cm2, the percentage change in resistance of the gauge is
A.	0.05%
B.	0.10%
C.	0.15%
D.	0.25%
Answer» D. 0.25%

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A resistance strain gauge is used to measure the stress of steel which is stressed to 1200 kg/cm2. If the gauge factor is 2.5 and Young’s modulus of steel is 2 x 106 kg/cm2, the percentage change in resistance of the gauge is

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