Moving coil instrument-Relation between deflecting torque & current flow

Q.  The deflecting torque in a moving coil instrument is
- Published on 04 Nov 15

a. Directly proportional to the current flowing through it
b. Inversely proportional to the current flowing through it
c. Inversely proportional to the square of current flowing through it
d. Directly proportional to the square of current flowing through it

ANSWER: Directly proportional to the square of current flowing through it

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    Discussion

  • Angshuman Bhattacharyya    -Posted on 09 Sep 18
    But i think deflecting torque(Td)=NBai i.e Td proportional to i..how i square pls clear the concept

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