Could u put it in english u can use goggle translation if u do not know how to
Answer:
he spring provides the controlling torque. The air friction induces the damping torque, which opposes the movement of the coil. The repulsion type instrument is a non-polarized instrument, i.e., free from the direction of current passes through it. Thus, it is used for both AC and DC
I believe the correct answer is d. thermosphere.
