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  • The current sensitivity of a galvanometer can be increased by : (A) decreasing the number of turns (B) increasing the magnetic field (C) decreasing the area of the coil

The current sensitivity of a galvanometer can be increased by :
(A) decreasing the number of turns
(B) increasing the magnetic field
(C) decreasing the area of the coil
(D) decreasing the torsional constant of the spring
Choose the most appropriate answer from the options given below :

 

Option: 1

(B) and (C) only
 


Option: 2

(C) and (D) only
 


Option: 3

(A) and (C) only
 


Option: 4

(B) and (D) only


Answers (1)

best_answer

\mathrm{Current \: sensitivity =\frac{\phi}{I}}

                                    \mathrm{=\frac{N A B}{K}}

From the abare relation, it can be said that the current sensitivity is increased by increasing the magnetic field and decreasing the torsional constant of the spring
The correct statements are B & D

Hence 4 is correct option.

Posted by

jitender.kumar

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