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NEET2004PhysicsCurrent ElectricityActual

The resistance of a galvanometer is 50 . When 0.01 A current flows in it, full scale deflection is obtained in galvanometer, the resistance of shunt connected to convert galvanometer into an ammeter of range 5 A , will be

Options

  1. A0.1
  2. B0.2
  3. C0.3
  4. D0.4

Correct answer

A. 0.1

Step-by-step solution

Here: I_g=0.01 ~A , G=50 To convert the galvanometer in to an ammeter of range 5 A , a low resistance is to be connected in parallel with coil of galvanometer. S= i g G i-i_g = 0.01 50 5-0.01 = 0.5 4.99 =0.1

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