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A line of uniform positive charge density +lambda extends from x=-L to x=+L as shown in...

A line of uniform positive charge density +lambda extends from x=-L to x=+L as shown in the figure below

( no pic ) its a solid bar from -L too +L , with y axis in the middle @ x=0 , and a point chrge @ x=D ( in the +x , past +L )

1)What is the total charge in the line in terms of the variables defined in the problem?

2) Determine an expression for the electric field at x = D in term of D, L, lamda, and constants. specify the direction of the E-field.

3) Show that in the limit D >> L your expression from (a) reduces to the field due to a point charge.

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