If n resistors of unequal resistances are connected in parallel,and the percenrage error in all resistors are k then,total error in parallel combination is?

(x frac{ z}{ x}+y frac{ z}{ y}=1+ frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} )

(x frac{ z}{ x}+y frac{ z}{ y}= frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} )

(x frac{ z}{ x}+y frac{ z}{ y}=1- frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} )

(x frac{ z}{ x}+y frac{ z}{ y}=1+ frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} )

(x frac{ z}{ x}+y frac{ z}{ y}=- frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} )

If n resistors of unequal resistances are connected in parallel,and th

1.	If n resistors of unequal resistances are connected in parallel,and the percenrage error in all resistors are k then,total error in parallel combination is?
A.	(x frac{ z}{ x}+y frac{ z}{ y}= frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} )
B.	(x frac{ z}{ x}+y frac{ z}{ y}=1- frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} )
C.	(x frac{ z}{ x}+y frac{ z}{ y}=1+ frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} )
D.	(x frac{ z}{ x}+y frac{ z}{ y}=- frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} )
Answer» C. (x frac{ z}{ x}+y frac{ z}{ y}=1+ frac{x^2+y^2}{x+y} e^{ frac{x^2+y^2}{x+y}} )