An electric string of length l is elastically stretched t...
An electric string of length l is elastically stretched through a length e by a force F. The area of cross- section of the string is A and its Young’s modulus is E. Which of the following expressions is correct?
F = EA/eI
F = EAI/e
F = EAe/l
F = EAe
Correct answer is C
E = Stress/Strain = F/A/e/L
E = FL/AE; F = EAe/L