An electric bulb is rated ${\rm{220}}\,\,{\rm{V - 100}}\,\,{\rm{W}}$. The power consumed by it when operated on ${\rm{110}}\,\,{\rm{V}}$ will be

JEE PHYSICS MCQ: CURRENT ELECTRICITY

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Application +4 | -1

An electric bulb is rated

\mathrm{220}\,\,\mathrm{V - 100}\,\,\mathrm{W}

. The power consumed by it when operated on

\mathrm{110}\,\,\mathrm{V}

will be

View answer and explanation

Correct option: C

{\mathrm{25}\,\,\mathrm{W}}

Option C (

{\mathrm{25}\,\mathrm{W}}

) is correct because the power consumed is proportional to the square of the voltage, and the resistance remains constant.

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