electrical resistance - 2024 ACF Fall

Question

A three terminal potentiometer with an unconnected terminal is a common rheostat used to vary this quantity. For 10 points each:

[10m] Name this quantity whose value for some components is indicated by four colored bands.

ANSWER: electrical resistance

[10e] Resistance equals voltage divided by current by a law named after this German physicist, who also gives his name to the SI unit of resistance.

ANSWER: Georg Ohm [accept Ohm’s law; accept ohms]

[10h] The strength of an unknown resistor is calculated using one of these circuits. Three resistors of known strength and the unknown resistor are placed in a diamond shape in these circuits.

ANSWER: Wheatstone bridges [prompt on Wheatstone; prompt on bridges; prompt on Wheatstone circuits]

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Summary


2024 ACF Fall at Cornell	fall	Y	9	21.11	100%	89%	22%
2024 ACF Fall at Ohio State	fall	Y	8	18.75	100%	88%	0%
2024 ACF Fall at Washington	fall	Y	6	16.67	100%	50%	17%
2024 ACF Fall at Georgia	fall	Y	11	20.91	100%	73%	36%
2024 ACF Fall at North Carolina	fall	Y	9	15.56	100%	56%	0%
2024 ACF Fall at Claremont Colleges	fall	Y	5	24.00	100%	80%	60%
2024 ACF Fall at Rutgers	fall	Y	7	24.29	100%	100%	43%

Data


Binghamton A	RIT C	10	10	0	20
Binghamton B	Cornell E	10	10	0	20
Binghamton C	Cornell C	10	10	10	30
Cornell A	Cornell D	0	10	0	10
Cornell B	RIT A	10	10	0	20
Cornell F	Penn State	10	10	0	20
ESF	Cornell G	10	10	0	20
Syracuse	U of Rochester A	10	10	0	20
RIT B	U of Rochester B	10	10	10	30
Michigan C	CWRU A (UG)	10	10	0	20
CWRU B (DII)	CWRU C (UG)	10	10	0	20
West Virginia A (UG)	Miami C (DII)	10	10	0	20
Ohio State C (DII)	Michigan B (UG)	0	10	0	10
Michigan A (UG)	Michigan D (UG)	10	10	0	20
Michigan State A	Jefferson County Scholars (DII)	10	10	0	20
Ohio State B (DII)	Michigan State B	10	10	0	20
Miami A (UG)	West Virginia B (UG)	10	10	0	20
Arizona State B	Alberta	0	10	0	10
Boise State	UW Gluttony	10	10	0	20
UW Lust	UW Greed	0	10	0	10
UBC B	UW Pride	10	10	10	30
UW Sloth	Arizona State A	0	10	0	10
UW Wrath	UBC A	10	10	0	20
Vanderbilt A	Alabama A	10	10	10	30
Georgia Tech B	Auburn C	10	10	0	20
Emory A	Emory Oxford	10	10	0	20
Georgia Tech A	Furman	10	10	10	30
Belmont	Georgia Tech C	0	10	0	10
Tennessee A	Georgia Tech D	10	10	10	30
Missisippi State	Georgia Tech B	10	10	10	30
Mississippi State A	Georgia Tech E	0	10	0	10
South Carolina B	Southern	0	10	0	10
Clemson B	Tennessee B	10	10	0	20
Auburn B	Vanderbilt B	10	10	0	20
VCU	Appalachian State B	10	10	0	20
UNC B	Duke A	0	10	0	10
James Madison B	UNC D	0	10	0	10
Virginia Tech A	Liberty A	10	10	0	20
Tusculum	Liberty C	10	10	0	20
NC State	Virginia Tech B	10	10	0	20
UNC A	Duke B	10	10	0	20
Appalachian State A	UNC C	0	10	0	10
William & Mary	Virginia	0	10	0	10
UCLA C	Claremont C	10	10	10	30
UCLA A	UCLA E	10	10	0	20
UCLA B	Claremont A	0	10	0	10
UCSD	UCLA D	10	10	10	30
USC	Claremont B	10	10	10	30
Columbia A (UG)	Bard A (UG)	10	10	10	30
Columbia B	Rutgers B	10	10	10	30
Columbia J (DII)	Lehigh B (DII)	10	10	10	30
Fordham A	Maryland B (DII)	10	10	0	20
Lehigh A (UG)	Penn A (DII)	10	10	0	20
Maryland A (DII)	NYU B	10	10	0	20
Penn B (DII)	Princeton A (UG)	10	10	0	20