Two galvanometers A and B require 3 ,mA and 5 ,mA respectively to… - Vidyadip

MCQ

Two galvanometers $A$ and $B$ require $3\,mA$ and $5\,mA$ respectively to produce the same deflection of $10$ divisions. Then

✓
$A$ is more sensitive than $B$
B
$B$ is more sensitive than $A$
C
$A$ and $B$ are equally sensitive
D
Sensitiveness of $B$ is $5/3$ times that of $A$

✓

Answer

Correct option: A.

$A$ is more sensitive than $B$

a
(a) Sensitivity $(S)$ =$\frac{\theta }{i}$ $==>$ $\frac{{{S_A}}}{{{S_B}}} = \frac{{{i_B}}}{{{i_A}}} = \frac{5}{3} \Rightarrow {S_A} > {S_B}$

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