question_answer

A \[50\Omega \] resistance is connected to a battery of 5V. 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