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When a force is applied on a wire of uni...

When a force is applied on a wire of uniform cross-sectional area `3xx10^-6m^2` and length 4 m, the increase in length is 1mm. Energy stored in it will be `(Y=2xx10^(11)(N)/(m^2)`)

A

6250 J

B

0.177 J

C

0.075 J

D

0.150 J

Text Solution

Verified by Experts

The correct Answer is:
A
(a) The energy stored in the wire
`U=(1)/(2)xxFxxl=(1)/(2)xx200x10^(-3)=0.1 J`
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