[单选题]
02.38: A$5×10^{−6}$coulomb electric charge is placed midway between two parallel metal plates connected to a 9-volt battery. If the electric charge experiences a force of$1.5 × 10^{−4}$newtons, what is the separation of the metal plates?
A. $6.75 × 10^{−9}m$
B. $2.7 × 10^{−4}m$
C. $3.7 × 10^{−3}m$
D. $0.30 m$
E. $3.3 m$
