Resistance coursework
Aim: My aim is to find out which factors affect the resistance of wire and how they affect them.
Ohm’s Law:
Ohm’s law is also relevant to know of Ohm’s Law, which states that the current through a metallic conductor (e.g. wire) at a constant temperature is proportional to the potential difference (voltage). Therefore V ¸ I is constant. This means that the resistance of a metallic conductor is constant providing that the temperature also remains constant. Furthermore, the resistance of a metal increases as its temperature increases. This is because at higher temperatures, the particles of the conductor are moving around more quickly, thus increasing the likelihood of collisions with the free electrons.
Resistance is the ratio of Voltage : Current and we calculate it by using the equation R=V/I.
Variables:
Material of wire: In my experiment I will be using wire, because it has a high resistance. This could be either it has a closer ions or......
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