Question $2$: In the pictures below, all the elements have a total charge $Q,$ which is equally

distributed along the whole line, unless specified otherwise.

$($i$)$ What is the field at point $P,$ in each of the pictures?

$($ii$)$ Which geometry produced the strongest field at this point?

$($i$)$

$($ii$)$

$P$

$($iii$)$

$($I$)$

If of this ring has $+\frac{q}{2},$ equally

distributed, and the other half

has $-\frac{q}{2},$ equally distributed.