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Question

The save of a galvanometer of resistance 100Ω contains 25 divisions  It gives a deflection of 1 division on passing a current of  4 cross times 10 to the power of negative 4 end exponent A The resistance in ohm to be added to it  so that it may become a voltmeter of range 25 V is

  1. 250
  2. 300
  3. 150
  4. 100

The correct answer is: 150

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