Things To Ponder Before Coming To Lab And To Answer Before Leaving 1 Derive Eq 1 What Are The Units Of P The Resisti 1 (32.13 KiB) Viewed 12 times
Things To Ponder Before Coming To Lab And To Answer Before Leaving 1 Derive Eq 1 What Are The Units Of P The Resisti 2 (34.82 KiB) Viewed 12 times
THINGS TO PONDER BEFORE COMING TO LAB AND TO ANSWER BEFORE LEAVING 1. Derive EQ. 1. What are the units of p, the resistivity? Why is the precision of the slide-wire bridge increased by obtaining a null point near the center of the wire rather than near one of the ends? 2. 3. 4. 5. What sort of errors may be eliminated by making the two measurements of R (one with Rx and Rs interchanged) and then averaging the two answers? If your measured and calculated values for R₁ and R₂ in series and parallel do not agree within your estimated uncertainties, can you figure out why? [Ref: WMU Physics Lab Manual 1985]
Unknown Resistance: R₁: R₂: #1 Rseries: #2 Rparallel Green Blue #1 #2 #1 #2 Brown #1 #2 R₂ = 328 0 AD = AD = R₂ = AD= AD -> Rs = AD - AD = R₂ = AD = AD Orange orange 50cm 50.5cm 5602 47 47mm 200 50-8 50 cm 50.5 cm BD = a 51.3 DATA SHEET WHEATSTONE BRIDGE ATA BD = BD = BD BD = BD = BD - BD = 50cm R 49.5cm R₁ = * mean R₂ = 50 cm R₂ 560 49.5cm, R₂ 571.32 mean R₂ = 53 53cm 49.2 mean Rseries 48.7 Rx (A) = 32822 334.6 Rseries Rseries= 886.7952 Rparallel Rparalle! 210.68 mean Rparallel
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