Assume that a red blood cell is spherical with a radius of 4.5×10−6m and with wall thickness of 9.5 ×10−8m. The dielectric constant of the membrane is about 5.0. The potential difference across the membrane is 0.080 VV.
1. Assuming the cell is a parallel plate capacitor, estimate the capacitance of the cell ?
2.Determine the positive charge on the outside and the equal-magnitude negative charge inside?