1.

With the data of the above problem, the strain energy per unit volume stored in the wires is,A. `4xx10^(2)J//m^(3)`B. `4 xx 10^(3)J//m^(3)`C. `4 J//m^(3)`D. `4xx10^(5)J//m^(3)`

Answer» Correct Answer - D
`u=(W)/(v) =(0.4)/(AL)=(0.4)/(10^(-6) xx1)`
`u=0.4xx10^(6)`
`=4xx10^(5) J//m^(3)`.


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