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Question

A galvanometer has a current sensitivity of 1mA per division. A variable shunt is connected across the galvanometer and the combination is put in series with a resistance of 500 capital omega and cell of internal resistance 0.5 capital omega. It gives a deflection of 5 division for shunt of 5 ohm and 20 division for shunt of 25 ohm. Find the emf of cell and resistance of galvanometer.

  1. 50 V comma 100 capital omega    
  2. 47.1 V comma 88.2 capital omega    
  3. 68.4 V comma 23.4 capital omega    
  4. 23.5 V comma 90.3 capital omega    

The correct answer is: 47.1 V comma 88.2 capital omega

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