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MHT CET202020 Oct 2020Evening ShiftPhysicsCurrent ElectricityActual

What will be the resistance of the shunt when 5 % of the main current is passed through a galvanometer of resistance G?

Options

  1. AG 20
  2. BG 21
  3. CG 5
  4. DG 19

Correct answer

D. G 19

Step-by-step solution

Let the total passing be I . Thus current passing through galvanometer I _ G =0.05 I Also, current passing through shunt resistance I _ S = I -0.05 I =0.95 I Using I_ S S=I_ G G S G = 0.05 0.95 = 1 10 S= G 19

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