Think about it. The current will always move more towards the path of least resistance in a complex circuit. The coulomb force is proportional to the product of the two charges. Like charges repel. Unlike charges attract.
Charges produce electric fields.
These are similar to gravitational fields. An electric field due to a single small charge is radial - lines moving out from the charge. A second charge will feel a force when placed in an electric field, just like a mass feels a force when placed in a gravitational field. Current is measured with ammeters. Read the text to learn more about potential difference or voltage.