Two tangent galvanometers A and B are identical except in their number of turns. They are connected in series. On passing a current through them, deflections of 60^ and 30^ are produce(d)The ratio of the number of turns in A and B is

Step-by-step solution

Given, _ A =60^ , _ B =30^ We know that, deflection in galvanometer and current I are related as =K N I where, K= constant, N= number of turns in the coil of galvanometer and I= current. _ A _ B = N_ A N_ B 60^ 30^ = N_ A N_ B 3 1 3 = N_ A N_ B 3 1 = N_ A N_ B N_ A : N_ B =3: 1