Justine

I need this for my assessment :) Simple detail of this would be enough, no need for paragraphs. Just few would be fine.

I need help on what to say in my letter to the teacher of why I should be the class representative. It's different here in our school. Instead of the students electing, it's the teachers. I'm having trouble with writing a letter, I don't want it to be too plain like, 'Title: WHY I SHOULD BE CLASS REP!' or 'Hi. My name is...' I want it to be a lot more different. Anyone willing to help?

I graphed my resuts for Voltage vs Current for my 330ohm resistor(measuring the voltage across the bulb and current which flows through the bulb). My graph shows a straight line which means it is an ohmic resistor. The circuit for which these measurements were taken were from a simple circuit consisting of 2 cells, and a variable resistor. The problem is my friend's result gave her a non-linear graph and says that it is a non-ohmic resistor. Also, can I say that the voltage is directly proportional to current even though the resistor used is non-ohmic? We are just doing the same experiment. Can someone help me with this please. Thanks.

I'm graphing my results for the voltage vs current across a light bulb, 100ohm resistor and 330 ohm resistor. My results show (for all of them) that as voltage increase, so does current. The problem is I don't know if I should put on my conclusion that my results show that voltage is directly proportional to current but does not obey ohm's law? (for the light bulb). It's quite confusing. Can anybody explain this to me? Thanks.