A single strain gauge of resistance 120 Ω is mounted along the axial direction of an axially loaded specimen of steel (E = 200 GPa).The percentage change in length of the rod due to loading is 3% and the corresponding change in resistivity of strain gauge material is 0.3%, For a Poisson's ratio of 0.3, the value of the gauge factor is

A single strain gauge of resistance 120 Ω is mounted along the axial

1.	A single strain gauge of resistance 120 Ω is mounted along the axial direction of an axially loaded specimen of steel (E = 200 GPa).The percentage change in length of the rod due to loading is 3% and the corresponding change in resistivity of strain gauge material is 0.3%, For a Poisson's ratio of 0.3, the value of the gauge factor is
A.	1.3
B.	1.5
C.	1.7
D.	2
Answer» D. 2