The potential difference across a cell membrane is -70.0 mV. If the membrane's thickness is 12.6 nm, what is the magnitude of the electric field in the membrane? Assume the field is uniform. V/m

A shark is able to detect the presence of electric fields as small as 1.70 μV/m. To get an idea of the magnitude of this field, suppose you have a parallel plate capacitor connected to a 2.00-V battery. How far apart must the parallel plates be to have an electric field of 1.70 μV/m between the plates? need answer in km

The potential difference across a cell membrane is −68.0 mV. If the membrane’s thickness is 16.6 nm, what is the magnitude of the electric field in the membrane? Assume the field is uniform.

Two large parallel plates are separated by a 0.015-m gap. The plates are connected to the terminals of a 12-V battery, which remains connected. a) What is the strength of the electric field in the region between the plates? b) What happens to the strength of the electric field if the gap between the plates is reduced to 0.010 m? Justify your answer. c) Does charge flow through the battery as the separation between the plates is being reduced? Explain your answer.