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Manipal MET2018PhysicsCurrent Electricity

A galvanometer of resistance 20 is to be converted into an ammeter of range 1 A . If a current of 1 mA produces full scale deflection, the shunt required for the purpose is

Options

  1. A0.01
  2. B0.02
  3. C0.05
  4. D0.04

Correct answer

B. 0.02

Step-by-step solution

S= I_g G I-I_g = 10⁻³ 20 1-1 10⁻³ =0.02

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