GCSAA Turf Equipment Technician Electrical Systems Practice Exam

A cell is the electrochemical unit that converts chemical energy into electrical energy. Inside the cell, chemical reactions push electrons from one electrode to the other, creating a flow of electrical current when the cell is connected to a circuit. This conversion of chemical energy to electrical energy is the fundamental function of a cell, which is why it’s the best description.

A battery may contain one cell or many cells arranged in series or parallel to achieve higher voltage or capacity. The other options don’t capture what a cell does: a container for storing charge describes storage rather than conversion, current increases depend on the external circuit rather than the cell itself, and magnetic energy isn’t the energy form involved in chemical batteries.