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A galvanometer of resistance G is converted into a voltmeter of range 0 - 1V by connecting a resistance R1 in series with it.

 
Physics
Last Post by nikhil04 4 years ago
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19/09/2020 11:34 am
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aditi07 
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A galvanometer of resistance G is converted into a voltmeter of range 0 - 1V by connecting a resistance R1 in series with it. The additional resistance that should be connected in series with R1 to increase the range of the voltmeter to 0 – 2V will be :

(1) R1 + G

(2) R1

(3) R1 - G

(4) G

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19/09/2020 11:38 am
nikhil04 
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(1) R1 + G

Explanation:

ig(R1 + g) = 1

ig(R1 + G + R2) = 2

1/R1 + G(R1 + G + R2) = 2

R1 + G + R2 = 2R1 + 2G

R2 = R1 + G

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