Back to 21.1 Resistors in Series and Parallel

21.1 Exercise 23

Avg difficulty 2.5

Note: Data taken from figures can be assumed to be accurate to three significant digits.

Your car’s 30.0-W headlight and 2.40-kW starter are ordinarily connected in parallel in a 12.0-V system. What power would one headlight and the starter consume if connected in series to a 12.0-V battery? (Neglect any other resistance in the circuit and any change in resistance in the two devices.)

OpenStax College Physics 2e, 21.1 Resistors in Series and Parallel, exercise 23

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Adapted from College Physics © 2022 Rice University. Licensed under CC BY 4.0. Sources: College Physics 2e, College Physics for AP® Courses 2e. Imported at revision f98d7a7.