Relation between restoring torque & angle of deflection

Q.  The restoring torque in a spring controlled indicating instrument is
- Published on 03 Nov 15

a. Directly proportional to the angle of deflection of moving system
b. Directly proportional to the sine of angle of deflection of moving system
c. Inversely proportional to the angle of deflection of moving system
d. Directly proportional to the square of the angle of deflection of moving system

ANSWER: Directly proportional to the angle of deflection of moving system

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