A galvanometer of resistance ( 50 ) gives a full scale deflection for a current ( 5 10⁻⁴ ~A ). The resistance that should be connected in series with the galvanometer to read ( 3 ~V ) is

Step-by-step solution

Resistance of galvanometer =50 current =5 10⁻⁴ A ; voltage =3 ~V We know resistance, array l R= V I_ g -G= 3 5 10⁻⁴ -50=6000-50 R=5950 array Thus, resistance that should be connected in series with the galvanometer to read 3 ~V is 5950 .