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26 Nov 2019
The starting motor of an automobile is turning too slowly,andthe mechanic has to decide whether to replace the motor, thecable,or the 12 V battery. The mechanic turns on the motor andmeasures11 V across the battery, 3.3 V across the cable, and acurrent of42 A. What are the resistances of (a)the battery,(b) the cable, and(c) themotor?
(a)
Number
23.8095e-3 Units
Ω
(b)
Number
78.5714e-3 Units
Ω
(c)
Number
Units
Ω
The starting motor of an automobile is turning too slowly,andthe mechanic has to decide whether to replace the motor, thecable,or the 12 V battery. The mechanic turns on the motor andmeasures11 V across the battery, 3.3 V across the cable, and acurrent of42 A. What are the resistances of (a)the battery,(b) the cable, and(c) themotor?
(a) | Number | 23.8095e-3 | Units | Ω |
(b) | Number | 78.5714e-3 | Units | Ω |
(c) | Number | Units | Ω |
Trinidad TremblayLv2
9 Apr 2019
