Introduction:
Electric cells are devices that convert chemical energy into electrical energy. They consist of two terminals, the positive and the negative terminals. Each terminal plays a crucial role in the functioning of an electric cell.

Positive Terminal:
The positive terminal of an electric cell is also known as the cathode. It is usually marked with a plus sign (+). The positive terminal is connected to the positive end of the external circuit, such as a light bulb or a motor. Here's what the positive terminal does:

1.Provides Electrons: The positive terminal acts as the source of electrons. During the chemical reaction inside the cell, electrons are produced at the positive terminal. These electrons move through the external circuit, creating an electric current.

2. Supplies Energy: The positive terminal supplies electrical energy to the connected devices. The flow of electrons from the positive terminal powers the electrical appliances, allowing them to perform their intended functions.

3. Receives Positive Ions: In some types of cells, positive ions are attracted to the positive terminal. These ions are produced during the chemical reaction and move towards the positive terminal. This movement of positive ions helps maintain the flow of electrons in the cell.

Negative Terminal:
The negative terminal of an electric cell is also known as the anode. It is usually marked with a minus sign (-). The negative terminal is connected to the negative end of the external circuit. Here's what the negative terminal does:

1. Accepts Electrons: The negative terminal acts as the sink for electrons. Electrons from the external circuit enter the cell through the negative terminal. These electrons combine with positive ions (produced during the chemical reaction) to maintain the balance of charge inside the cell.

2. Completes the Circuit: The negative terminal completes the electrical circuit by allowing the flow of electrons from the external circuit back into the cell. This continuous flow of electrons between the positive and negative terminals enables the cell to continuously provide electrical energy.

3. Facilitates Chemical Reactions: The negative terminal is involved in the chemical reactions that occur inside the cell. It provides a site for the reaction to take place and helps in the transfer of electrons and ions.

Conclusion:
In summary, the positive terminal of an electric cell provides electrons and supplies electrical energy to the connected devices, while the negative terminal accepts electrons, completes the circuit, and facilitates chemical reactions. Both terminals play essential roles in the functioning of an electric cell, allowing the conversion of chemical energy into electrical energy.