A $50\,\Omega $ resistance is connected to a battery of $5\,V$.  A galvanometer of resistance $100\, \Omega $ is to be used as an ammeter to measure current through the resistance, for this a resistance $r_s$ is connected to the galvanometer. Which of the following connections should be employed if the measured current is within $1\% $ of the current without the ammeter in the circuit ?
  • A$r_s = 0.5\, \Omega $  in series with the galvanometer
  • B$r_s = 1\, \Omega $  in series with galvanometer
  • C$r_s = 1\, \Omega $ in parallel with galvanometer
  • D$r_s = 0.5\, \Omega $ in parallel with the galvanometer
JEE MAIN 2016, Diffcult
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