Physics

Problem

An electronic sensor requires a steady current of

5.0\,\text{mA}

when powered by a

9.0\,\text{V}

source. To achieve this, what resistance should be placed in series with the sensor? a)

180\,\Omega

1.8\times10^{4}\,\Omega

1.8\,\text{k}\Omega

900\,\Omega