The infinitesimal amount of work done on changing the length of a wire – McqOptions

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1.	The infinitesimal amount of work done on changing the length of a wire with tension T from L to L+dL is
A.	-FdL
B.	FdL
C.	-2FdL
D.	2FdL
Answer» B. FdL

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The infinitesimal amount of work done on changing the length of a wire with tension T from L to L+dL is