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JEE Main20205 Sep 2020Evening ShiftPhysicsCurrent ElectricityActual

A galvanometer is used in laboratory for detecting the null point in electrical experiments. If, on passing a current of 6 m A it produces a deflection of 2 ° , its figure of merit is close to :

Options

  1. A333 °   A / d i v
  2. B6 × 10 - 3 A / div
  3. C  666 °   A / d i v .
  4. D3 × 10 - 3 A / div

Correct answer

D. 3 × 10 - 3 A / div

Step-by-step solution

Current sensitivity = 1 θ = 6 × 10 - 3 2 = 3 × 10 - 3

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