(8c25p24) The figure shows a varable \"air gap\" capacitor of the type used in m

Question

(8c25p24) The figure shows a varable "air gap" capacitor of the type used in manually tuned radios. Alternate plates are connected together; one group is fixed in position and the other group is capable of rotation. Consider a pile of n = 10 plates of alternate polarity, each having an area A = 3.00?10-2 m2 and separated from adjacent plates by a distance d = 2.70?10-3 m. Compute the maximum capacitance.

(8c25p24) The figure shows a varable air gap capacitor of the type used in manually tuned radios. Alternate plates are connected together; one group is fixed in position and the other group is capable of rotation. Consider a pile of n = 10 plates of alternate polarity, each having an area A = 3.00?10-2 m2 and separated from adjacent plates by a distance d = 2.70?10-3 m. Compute the maximum capacitance.

Explanation / Answer

C = 9 k A/d = 9*1*8.85e-12*3.00e-2/2.70e-3 = 885e-12 C

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