question_answer 8)

In a parallel plate capacitor with air between the plates, each plate has an area of 6 x 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? 

Answer:

Using we get                                 = 17.708 × 10?12  18 pF.                 Using                 i.e., q = 18 × 100 = 1.8 × 10?9C.