A torch bulb is rated

PHYSICS · Single correct · CBSE · Physics · Electricity · Electricity

Problem

A torch bulb is rated

3\,\text{V},\;0.3\,\text{A}

. The bulb is to be connected to a

9\,\text{V}

battery so that it glows at its rated conditions. What resistance should be connected in series with the bulb? (a)

30\,\Omega

(b)

20\,\Omega

(c)

7\,\Omega

(d)

10\,\Omega

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