[单选题]
A parallel-plate capacirj9uc)e tp3a oa e,47y3mwvljzg. )w5tor has plat-v/11 u bxdweies of area $0.20 \; m^{2}$ 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?