10.
在直角坐标系\(xOy\)中,曲线\(C_{1}\)的参数方程为\(\begin{cases}x=2\cos α \\ y=2+2\sin α\end{cases} \),\((α\)为参数\()\),\(M\)是\(C_{1}\)上动点,\(P\)点满足\(\overrightarrow{OP} =2\overrightarrow{OM} \),\(P\)点的轨迹为曲线\(C_{2}\)
\((1)\)求\(C_{2}\)的方程;
\((2)\)在以\(O\)为极点,\(x\)轴正半轴为极轴的极坐标系中,射线\(θ=\dfrac{π}{3} \)与\(C_{1}\)的异于极点的交点为\(A\),与\(C_{2}\)的异于极点的交点为\(B\),求\(|AB|\);
\((3)\)若直线\(l\):\(\begin{cases}x=4- \sqrt{3}t \\ y=-t\end{cases} (t\)为参数\()\)和曲线\(C_{2}\)交于\(E\)、\(F\)两点,且\(EF\)的中点为\(G\),又点\(H(4,0)\),求\(|HG|\).