So when the particles are oppositely charged they are attracted towards
each other. When they are of the same charge they will repel. The forces
of attraction force each other away like two magnets of the same pole (e.g.
both North). The animation below illustrates this event for two positively
charged particles. The result is the same if the two particles are negatively
Figure 5. When two like charges
are near each other they will be pushed away from each other. That is,
as far as ions are concerned, like charges repel. This principle also
helps push electricity in wires by pushing particles away from a region
with a lot of the same charge, like the negative pole of a battery.
these concepts to the neuron.