Two metal balls of radius R are connected to each other with a thin metal wire. The balls are in a homogeneous electric field of strength E. The length of the metal wire is l, furthermore l ≫ R. The system is at equilibrium. Find the mechanical tension T in the wire.

[ Put the numerical values in your answer. Here given, l=100m, R=1cm, $E=10^{6}$N/C, $\epsilon_0 = 8.854\times10^{-12}$ C²/N. m² ]