Answer to Question #311463 in Electricity and Magnetism for Dumbo

Question

Ms. Enriquez instructed the students to choose which between the two capacitor has the greatest capacitance. The metal plates of Capacitor A has an area of 100 cm² separated by a distance of 0.2 cm while Capacitor B's metal plates is 0.4 cm away from each other with an area of 50 cm². Which one shall the students choose?

Answer 1

$C_1=\frac{\varepsilon_0S_1}{d_1}=44.25~pF,$

$C_2=\frac{\varepsilon_0S_2}{d_2}=11.06~pF,$

$C_1>C_2.$