Question $2$

Given that $q_1=7\mathrm{.}10nC,q_2=-5\mathrm{.}4nC,a=9\mathrm{.}10cm$ and $b=1\mathrm{.}90cm.$ What is the magntude of the electric field at point $p?$

$1\mathrm{.}27{10}^5\frac{N}{C}$

$1\mathrm{.}42{10}^5\frac{N}{C}$

$6\mathrm{.}34{10}^4\frac{N}{C}$

$1\mathrm{.}35{10}^5\frac{N}{C}$