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MHT CET202014 Oct 2020Evening ShiftPhysicsCurrent ElectricityActual

Scale of galvanometer divided into 100 equal divisions has a current sensitivity 10 div./mA and voltage sensitivity 4 div./mV. The resistance of galvanometer is

Options

  1. A5
  2. B2.50
  3. C10
  4. D7.5

Correct answer

B. 2.50

Step-by-step solution

d dI =10 div / m A , d dV =4 div / mV d dI d dV = dV dI = 10 mV 4 ~mA =2.5

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