Consider a parallel-plate, air-filled capacitor with plate separation d and plate area A.  What happens to its capacitance if A is quadrupled and d is halved ? A. It will be 8 times the original value. B. It will be half the original value. C. It will be the same. D. It will be 1/8 of its original value.

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Electric Charges and Fields

One of the fundamental properties is the electromagnetic property. Charge cannot be destroyed by any process and this contributes formally to the law of charge conservation.