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A moving coil galvanometer has 150 equal divisions. Its current sensitivity is 10 divisions per milliampere and voltage sensitivity is 2 divisions per millivolt. In order that each division reads 1 volt, the resistance in ohms needed to be connected in series with the coil will be

Options

  1. A10^3
  2. B10^5
  3. C99995
  4. D9995

Correct answer

D. 9995

Step-by-step solution

I_g=15 ~mA V g=75 mV R = V I _g - V _g I_g

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