The positive side of a battery is where the electrical current flows out, while the negative side is where the current flows in. These sides are commonly referred to as the positive and negative terminals respectively. How can I identify the positive and negative terminals of a battery?
Electrons are negatively charged, and so are attracted to the positive end of a battery and repelled by the negative end. So when the battery is hooked up to a conductor that lets the electrons flow through it, they flow from negative to positive. Q.
Poles: In a battery, the negative side is commonly referred to as the cathode or the negative pole. It is the end of the battery where electrical current flows out. The negative pole is often the larger terminal and can be identified by its negative symbol or a minus (-) sign.
The positive terminal is often marked with a plus symbol (+), while the negative terminal is marked with a minus symbol (-). This marking helps differentiate the two poles and ensures proper connection. Another way to identify the battery poles is by examining the physical appearance of the terminals.
The direction of flow of electricity in an electrolytic cell is the opposite from the flow when a battery is being used to power an external circuit, and the roles of the two poles or electrodes are reversed. Thus some writers will refer to the positive pole of a battery as its “cathode”.
The direction of current flow from positive to negative terminal is nothing but a convention. It was concluded that current flow is the flow of positive charges. Electrons are negatively charged, and so are attracted to the positive end of a battery and repelled by the negative end.