Practical: Factors affecting R (pencil)

IB Physics: Practical: Factors affecting R (pencil)

Pencil lead is made out of graphite which conducts electricity so a line drawn on a piece of paper has electrical resistance that can be measured using a multimeter. In this practical the resistance of different lines will be measured to see how the resistance of a line is related to its length and thickness.The resistance of a conductor is given by the equationWhere ρ = resistivityL = lengthA = Cross sectional area

To access the entire contents of this site, you need to log in or subscribe to it..

Click the free stuff button on the home page to access free pages or check the blog (which is also free).

All materials on this website are for the exclusive use of teachers and students at subscribing schools for the period of their subscription. Any unauthorised copying or posting of materials on other websites is an infringement of our copyright and could result in your account being blocked and legal action being taken against you.