A car bulb is rated

PHYSICS · Single correct · AP · Physics 2: Algebra-based · Electric Circuits · Electric Circuits

Problem

A car bulb is rated 12 V,  24 W12\,\text{V},\;24\,\text{W}. It is to be used with a 48 V48\,\text{V} battery. What resistance should be connected in series with the bulb so that the bulb operates at its rated power? (a) 24 Ω24\,\Omega (b) 6 Ω6\,\Omega (c) 18 Ω18\,\Omega (d) 22 Ω22\,\Omega

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