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A torch is powered by four dry cells placed in series. There is a choice of bulbs that can be used. The user wants a bulb that will provide a maximum amount of power - by performing appropriate experiments, determine the best requirements for the bulb.
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Aim: A torch is powered by four dry cells placed in series. There is a choice of bulbs that can be used. The user wants a bulb that will provide a maximum amount of power. The aim is, by performing appropriate experiments, determine the best requirements for the bulb. Introduction: From previously performed experiments in lessons and personal research I have deduced that in order to obtain the maximum amount of power in a particular circuit the internal resistance (r) has to equal the load resistance (R). This theory can be presented on the following graph of load resistance (x-axis) against power (y-axis). This graph, which can be obtained from most modern textbooks, proves that the maximum power can be achieved when the load resistance is equal to the internal resistance (r). I can therefore use this knowledge to develop a method by which to conduct an appropriate experiment that will allow me...
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