First slide

Moving coil Galvanometer

Question

Current sensitivity of a moving coil galvanometer can be increased by decreasing

Moderate

A

The area of the coil
B

The couple per unit twist of the suspension
C

The number of turns in the coil
D

both 1 and 3 are true

Solution

(2)
$\begin{array}{l} C u r r e n t s e n s i t i v i t y S_{i} = \frac{θ}{i} = \frac{n A B}{C} \\ S o i f C d e c r e a s e s S_{i} i n c r e a s e s . \end{array}$

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