What is the electromotive force of a cell?A light bulb will light up when it is connected in series with a cell as shown in Figure.The cell is the source of energy and the bulb is the energy-consuming device. The light bulb converts electrical energy into heat and light energy. The electric charges that flow around the circuit transfer energy from the source … [Read more...] about Electromotive Force, Internal Resistance & Potential Difference of a Cell/Battery