For the hollow thin cylinderical current carrying pipe which statement is correct :- 

[Assume $a=1 m, b=10 m, Q={10}^{-3} C$]

There is a uniform electric field of strength ${10}^3 \mathrm{V} {\mathrm{m}}^{-1}$ along $y$-axis. A body of mass $1 \mathrm{g}$ and charge ${10}^{-6} \mathrm{C}$ is projected into the field from origin along the positive $x$-axis with a velocity $10 \mathrm{m} {\mathrm{s}}^{-1}$. Its speed in $\mathrm{m} {\mathrm{s}}^{-1}$ after $10 \mathrm{s}$ is (neglect gravitation)

The adjacent diagram shows a charge $+Q$ held on an insulating support $S$ and enclosed by a hollow spherical conductor. $O$ represents the centre of the spherical conductor and $P$ is a point such that $OP=x$ and $SP=r$. The electric field at point $P$ will be: