Question: Calculate the uncertainty in the resistance of a bulb. The equation is R=V/I and the following measurements were taken: Potential Difference = 1.1 V Current = 0.4 A
Question: Calculate the uncertainty in the resistance of a bulb. The equation is R=V/I and the following measurements were taken: Potential Difference = 1.1 V Current = 0.4 A
This question is checking whether you understand the connection between uncertainty and the number of significant figures used.
1.1 V has 2sf 0.4 A has 1 sf - so it could be anywhere between 0.350 and 0.449
trailing zeros AFTER the decimal point *are significant figures* - if you measured the current to higher precision you could write 0.40 (i.e. 2sf) which would mean it was between 0.395 and 0.404
Question: Calculate the uncertainty in the resistance of a bulb. The equation is R=V/I and the following measurements were taken: Potential Difference = 1.1 V Current = 0.4 A
hi! I know this was years ago but where did you find this question from and may I please have the worksheet if you could find it?? Thanks