What is(are) the force(s) acting on the pointer of an indicating instrument when it is in motion?

What is(are) the force(s) acting on the pointer of an indicating instrument when it is in motion?

A. controlling and deflecting torques
B. damping and deflecting torques
C. controlling and damping torques
D. controlling, damping, deflecting torques

Show Answer

Answer: D

Share your understanding of this question with the correct explanation.