AAA, AA, C, D batteries all are rated at 1.5 volts but besides the difference in physical size the amount of electric current they produce is also different. In this project the four battery types will be connected to a small hobby motor designed to operate with a 1.5 volt D size battery and a specific current. From the observations made a data table will be produced and the results will be displayed in the form of a graph.
If the batteries all have the same voltage, why not just use AAA cells for all battery operated devices? Let's find out.
Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state's handbook of Science Safety.