Science questions - Printable Version +- School Survival Forums (http://forums.school-survival.net) +-- Forum: Learning, Youth Rights and School Survival (/forumdisplay.php?fid=3) +--- Forum: Homework Help & Answers (/forumdisplay.php?fid=30) +--- Thread: Science questions (/showthread.php?tid=12313) Science questions - Michio-kun - 10-11-2008 11:03 PM Science related stuff goes here. Re: Science questions - PunchingYou - 10-30-2008 10:04 AM k, i need lewis dot structure for N+N (2N) Re: Science questions - magikarp - 10-30-2008 10:21 AM (But the dots should be straight when you draw it.) Re: Science questions - Puchiko - 01-15-2009 05:02 AM Okay, I had little trouble overall with my Physics review worksheet, but I'm not too good at electricity so I'll have you solve this one for me. My translation is as follows: To the (energy) source, whose voltage we measured with an accurate voltmeter and got UO=4,5 V, we connect a resistor which has a resistance of 4 Ohms. This circuit has a current of IO=0,9 A, as measured by an ideal ammeter. The resistance of the supply leads and ammeter are negligible (ignore them in your calculations), but the resistance of the voltmeter is high. a) draw the electric circuit this forms b) explain why the electric current has only the value of IO (I don't understand this question, but perhaps you will) c) What electric current will pass through if we connect a different resistor with a resistance of 2 Ohms? What about 1 Ohm? d) What electric current would pass in the case of a short circuit? I need to have this done by Friday, so if you can get it up by 9 PM UTC tomorrow, that'd be great