A copper wire was subjected to a tensile stress of 7.7 x ...
A copper wire was subjected to a tensile stress of 7.7 x 10^7. calculate strain of the wire.
[young modules = 1.1 x 1011 Nm-2]
2. 0 x 10-5
7.0 x 10-3
7.0 x 10-4
2.2 x 10-4
Correct answer is C
Young modules = Tensile stressTensile strain
= 1.1×1011=7.7×107Tensile Strain
∴ Tensile strain = 7.7×1071.1×1011
= 7.0×107−11=7.0×10−4
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