The maximum current that can be measured by a galvanometer of resistance ${\rm{40}}\,\,{\rm{\Omega }}$ is ${\rm{10}}\,\,{\rm{mA}}$. It is converted into a voltmeter that can read upto ${\rm{50}}\,\,{\rm{V}}$. The resistance to be connected is series with the galvanometer (in ohm) is

JEE PHYSICS MCQ: MAGNETIC EFFECT OF CURRENT

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The maximum current that can be measured by a galvanometer of resistance

\mathrm{40}\,\,\mathrm{\Omega }

\mathrm{10}\,\,\mathrm{mA}

. It is converted into a voltmeter that can read upto

\mathrm{50}\,\,\mathrm{V}

. The resistance to be connected is series with the galvanometer (in ohm) is

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Correct option: D

4960

Option D (4960) is correct because the series resistance required to convert the galvanometer into a voltmeter is calculated using the formula R = V/Ig - G.

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