# Who wants to be critical of my work! (School Work)

Of course you all do lol

I’ve attached a word doc to this post, all it would require is someone to just look at the results and make sure I made no huge obvious mistakes regarding
current flow / voltage (closed/open) circuits.

Sorry about it being a .doc file, I installed Open Office.

Thanks… I’m concerned with my results for an open circuit voltage thanks Acting Lecturers lol

Prac 3-1 Series LED Circuits.doc (535 KB)

PREDICTIONS

(i) Assume your LED became ‘short circuited’ (i.e. it’s its resistance became zero). Determine values for the following and explain…

Regarding your "Table 3" results -- There's no voltage across the open circuit, the meter's impedance, though very high, completes the circuit nonetheless. In days of yore, meter loading was a big deal; these days, nobody has to care much about "ohms / volt" or "kohms / volt".

# 2, I would use different unit of measure - mA vs A.

5.68mA then results in total voltage that is much closer to 10V than you are seeing with .0056A

You could also ignore the current and calculate the voltage: Vjunction of R1/R2 = Vin *R2/(R1+R2) = 10V * 560/(1200+560) = 3.18V

VR1 = 10V - 3.18 = 6.82

ahhhhh.

thanks :)