What is the function of an electric cell?
Answers
An electrical cell is an "electrical power supply". It converts stored chemical energy into electrical potential energy, allowing positive charges to flow from the positive terminal to the negative one through an external circuit.
Answer:
An electrical cell is an "electrical power supply". It converts stored chemical energy into electrical potential energy, allowing positive charges to flow from the positive terminal to the negative one through an external circuit. This is called a current.
To complete the circuit, the charge must flow from the negative terminal back to the positive one inside the cell. Electrical forces of repulsion oppose this, but the chemical reaction provides larger forces on the charges enabling them to reach the positive terminal ready for another journey around the electric circuit. The voltage across the cell depends on the chemical reaction - a typical value being 1, point, 5, V,1.5V. To obtain larger voltages, we put the cells in series to make a battery. There are six tiny cells inside each rectangular 9, V,9V battery, for example.
These paragraphs make the usual assumption that it is positively charged objects which move around an electric circuit. Actually, any charged particle will do the job. Positive charges would go one way, negatively charged particles (like electrons) would go the other. When we talk about a direction of current, we refer to the direction a positive charge would go.