Question

Figure of merit of a galvanometer is 0.5 A per division. If the galvanometer has total 10 divisions then the current required for full deflection in one side is

• A. 5.0 A
• B. 2.0 A
• C. 2.5 A
• D. 3.0 A

Answer 1

The correct option is C 2.5 A

The current required for full deflection in one side is $I_g=nk$ where $n=$ divisions on one side and $k=$ figure of merit.

As total divisions is given $=10$ so $n=10/2=5$

Thus, $I_g=5\times 0.5=2.5A$