In a parallel plate capacitor with air between the plates, each plate has an area of 6 × 10–3 m2 and the distance between the plates is 3 mm. Calculate the capacitance of the capacitor. If this capacitor is connected to a 100 V supply, what is the charge on each plate of the capacitor?
Given, A = 6 x 10-3 m2
D = 3 mm = 3 x 10-3 m
Capacitance of the capacitor,
⇒ C = 1.77 x 10-11 F = 17.7 pF
When the capacitor is connected to a 100 V supply, the charge on the each plate of the capacitor,
q = CV = 1.77 x 10-11 x 100 = 1.77 x 10-9 C
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