A Parallel-Plate Capacitor Consists of Two Parallel, Square Plates Having $1.0 \mathrm {~cm}$

Multiple Choice

A parallel-plate capacitor consists of two parallel, square plates having dimensions $1.0 \mathrm {~cm}$ by $1.0$ $\mathrm { cm }$ . The plates are separated by $1.0 \mathrm {~mm}$ , and the space between them is filled with Teflon, which has a dielectric constant of $2.1$ . What is the capacitance of this capacitor? $\left( \varepsilon _ { 0 } = 8.85 \times 10 ^ { - 12 } \mathrm { C } ^ { 2 } / \mathrm { N } \right.$ . $\mathrm { m } ^ { 2 }$ )

A) $2.1 \mathrm { pF }$
B) $1.9 \mathrm { pF }$
C) $0.89 \mathrm { pF }$
D) $0.44 \mathrm { pF }$