[单选题]
A parallel-plate capacitor has plates of ay q)6z6tc6m * 91qzrmnu 7mzfcrru -otti-tp;vgr)e1 +cu a9 f0p;g ht(ea $0.20 \; m^{2}$ separated by a distance of 1.0 mm. What is the strength of the electric field between these plates when this capacitor is connected to a 6.0-V battery?