A galvanometer of resistance `50Omega` is connected to a b attery of 3V alongwith
Channel: Doubtnut
Date: 2020-01-28

A galvanometer of resistance `50Omega` is connected to a b attery of 3V alongwith a resistance of `2950Omega` in series. A full scale deflection of 30 division is obtained in the galvanometer in order to reduce this deflection to 20 division. The resistance in sereis. should be:-