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Introduction: Ohm's law states that the current flowing through a conductor is directly proportional to the potential difference applied across its ends, provided the temperature and all physical conditions remain constant. In mathematical equation, ohm's law can be written as: V=IR, where V is the voltage (measured in Volts, V), I the current (measured in Amps, A) and R, the resistance (measured in ohms, ?) which would oppose the flow of electric current. This equation can be plotted into a straight line graph of I vs. V as it follows the form y= mx + c, R being the m (gradient), y (dependent variable) being the current, x (independent variable) being the voltage and c (the constant) =0 in this case.. (See figure 1.1) From this diagram, I (A) it can be seen that the slope = I/V, which is equal to 1/R. The resistance can then be found by inversing the slope. V (V) Figure 1.1 Thus, a greater resistance...

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