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Visual science, resistance (4/40) Resistance is the barrier put up by an object to the flow of current through it. When an eel presses its chin against its victim to deliver a shock, electricity flows through the eel where the eel provides some resistance and on to the target, but water provides less resistance and carries electricity with ease, so if the eel's still submerged when it delivers the shock, the charge dissipates. An electric current flows when electrons are moving through a conductor, a more common place type of conductor would be an electric wire. The moving electrons can collide with the ions in the metal, this makes it more difficult for the current to flow, and causes resistance.