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A galvanometer of resistance $2 Ω$ and having full scale deflection for a current of 100 mA can be converted into a voltmeter of range 5 V by connecting a resistance R in series with the galvanometer. The resistance R in ohm is :

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Correct option is D

52+R=100×10−3 ⇒ R=48Ω

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A galvanometer of resistance 2Ω and having full scale deflection for a current of 100 mA can be converted into a voltmeter of range 5 V by connecting a resistance R in series with the galvanometer. The resistance R in ohm is :

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Ready to Test Your Skills?

free study material

A galvanometer of resistance $2 Ω$ and having full scale deflection for a current of 100 mA can be converted into a voltmeter of range 5 V by connecting a resistance R in series with the galvanometer. The resistance R in ohm is :