Question: When a nerve impulse propagates along a nerve cell, the electric field within the cell membrane changes from 7.0 105 N/C in one direction

When a nerve impulse propagates along a nerve cell, the electric field within the cell membrane changes from 7.0 × 105 N/C in one direction to 3.0 × 105 N/C in the other direction. Approximating the cell membrane as a parallel plate capacitor, find the magnitude of the change in charge density on the walls of the cell membrane.

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