Which component stores chemical energy and provides electromotive force in a circuit?

Which component stores chemical energy and provides electromotive force in a circuit?

• A. Lamp
• B. Switch
• C. Cell (battery)
• D. Wires

Answer: (C)

The main concept here is that the source of energy and the electromotive force in a circuit comes from a cell or battery. A cell stores chemical energy and, through chemical reactions, converts it into electrical energy, creating the electromotive force that pushes current around the circuit. A lamp is a load that uses electrical energy to produce light and heat, not to generate energy. A switch merely opens or closes the circuit, and wires simply conduct, with no energy storage or generation. Therefore, the component that stores chemical energy and provides electromotive force is the cell (battery).

The main concept here is that the source of energy and the electromotive force in a circuit comes from a cell or battery. A cell stores chemical energy and, through chemical reactions, converts it into electrical energy, creating the electromotive force that pushes current around the circuit. A lamp is a load that uses electrical energy to produce light and heat, not to generate energy. A switch merely opens or closes the circuit, and wires simply conduct, with no energy storage or generation. Therefore, the component that stores chemical energy and provides electromotive force is the cell (battery).