A car's headlight consumes 36 W when on low beam and 61 W when on high beam. (a) Find the current that flows in each case (V = 12 V). low beam __A high beam __ A (b) Find the resistance in each case. low beam __ Ω high beam __ Ω

A car's headlight consumes 36 W when on low beam and 61 W when on high beam. (a) Find the current that flows in each case (V = 12 V). low beam A high beam A (b) Find the resistance in each case. low beam Ω high beam Ω

College Physics

10th Edition

ISBN:9781285737027

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter17: Current And Resistance

Section: Chapter Questions

Problem 10CQ: Power P0 = I0 V0 is delivered to a resistor of resistance R0. If the resistance is doubled (Rnew =...

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Concept explainers

Resistivity

Resistivity is a characteristic property of the conductor’s material that measures the extent to which the material opposes the flow of current. It is denoted by the Greek letter “rho”. Electrical resistivity, also known as specific resistance, depends on the nature of the material of the conductor and is unaffected by its dimensions.

Question

100%

A car's headlight consumes

36 W

when on low beam and

61 W

when on high beam.

(a) Find the current that flows in each case

(V = 12 V).

low beam	__A
high beam	__ A

(b) Find the resistance in each case.

low beam	__ Ω
high beam	__ Ω

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