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 = $\frac{\text{Tensile stress}}{\text{Tensile strain}}$

= $1.1 \times 10^11 = \frac{7.7 \times 10^7}{\text{Tensile Strain}}$

∴ Tensile strain = $\frac{7.7 \times 10^7}{1.1 \times 10^11}$

= $7.0 \times 10^{7-11} = 7.0 \times 10^{-4}$

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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]

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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]

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A copper wire was subjected to a tensile stress of 7.7 x 10^7. calculate strain of the wire.

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