A galvanometer has resistance of $7\,\Omega $ and gives a full scale deflection for a current of $1.0\, A$. How will you convert it into a voltmeter of range $10\, V$
A$3\,\Omega $ in series
B$3\,\Omega $ in parallel
C$17\,\Omega $ in series
D$30\,\Omega $ in series
Medium
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A$3\,\Omega $ in series
a (a) By connecting a series resistance
$R = \frac{V}{{{i_g}}} - G = \frac{{10}}{1} - 7 = 3\,\Omega $
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