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MHT CET20227 Aug 2022Morning ShiftPhysicsCurrent ElectricityActual

A galvanometer of resistance ' G ' is shunted by a resistance of 5 . To keep the main current in the circuit unchanged, the resistance to be put in series with the same galvanometer is

Options

  1. AG ^2 ~S + G
  2. B5 G S+G
  3. CG S+G
  4. DS^2 S+G

Correct answer

A. G ^2 ~S + G

Step-by-step solution

Current will be unchanged if resistance remains same to aligned & G= G S G+S +R & R=G- G S G+S = G^2 G+S aligned

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