Question

Two tangent galvanometers are connected in series and a current is passed through the combination. If the deflections in them are $q_1$ and $q_2$, the ratio of their reduction factors is

• A. $q_2:q_1$
• B. $\tan q_1:\tan q_2$
• C. $\tan q_2:\tan q_1$
• D. $\sin q_2:\sin q_1$

Answer 1

The correct option is C $\tan q_2:\tan q_1$

$K=\frac{i}{\tan \theta }$
$\frac{K_1}{K_2}=\frac{\tan {\theta }_2}{\tan {\theta }_1}$
$=\tan q_2:\tan q_1$