... variable resistor in equal distances so I will get readings for every 1 amp, I will get the readings from the ammeter. Therefore I will get the potential difference results at the same time from the voltmeter. As I can not find out the temperature of the filament very easily because there is a glass dome restricting my access. The Key Variables:- * The Resistance - I can control this variable, this is a major source for my results. * The Current - again I can control this by increasing and decreasing the resistance. * The Potential Difference - I'm not able to control this variable; the increasing and decreasing of the current and therefore the resistance as well mainly controls it. * The Temperature - this again is a variable that I have no control over. I can't even find it out manually. There is a formula that I will use to find ...

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