A parallel-plate capacitor has circular plates of 10.8 cm radius and 1.07 mm sep
ID: 2280476 • Letter: A
Question
A parallel-plate capacitor has circular plates of 10.8 cm radius and 1.07 mm separation. (a) Calculate the capacitance in picofarads. (b) What charge in nanocoulombs will appear on the plates if a potential difference of 91.8 V is applied?
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pF pF/m H H/m A parallel-plate capacitor has circular plates of 10.8 cm radius and 1.07 mm separation. (a) Calculate the capacitance in picofarads. (b) What charge in nano coulombs will appear on the plates if a potential difference of 91.8 V is applied?Explanation / Answer
Capacitance = epsilon*A/d = 8.85*10^-12 * 3.14*(0.108)^2/(1.07*10^-3) = 302pF
b) charge in nanocoulombs will appear on the plates if a potential difference of 91.8 V is applied is
= 91.8*302*10^-12 = 27.723nC