The membrane that surrounds a certain type of living cell has a surface area of 4.90 * 10^-9 m2 and a thickness of 8.00*10^-9 m. Assume that the membrane behaves like a parallel plate capacitor and has a dielectric constant of 4.6. The potential on the outer surface of the membrane is +64.0 mV greater than that on the inside surface. If the charge isdue to positive ions (charge +e), how many such ions are present on the outer surface?

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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.