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A cathode is a type of electrode through which electrons move. Electrodes are an electrical conductor (usually a metal) that is connected to something that is not a metal. Electric current is a flow of charges through a conductor. There are two theories; one theory is conventional current flow and the other is actual current flow. The anode delivers conventional (or customary) current (which travels in the opposite direction as electrons) and the cathode receives that current. This means that electrons come out of the anode and electrons go into the cathode.