Physics

Problem

A car bulb is rated

12\,\text{V},\;24\,\text{W}

. It is to be used with a

48\,\text{V}

battery. What resistance should be connected in series with the bulb so that the bulb operates at its rated power? a)

24\,\Omega

6\,\Omega

18\,\Omega

22\,\Omega