What controls the rotation of the coil in a PMMC meter?

What controls the rotation of the coil in a PMMC meter?

Right Answer is:

Spring tension

SOLUTION

  • The rotation of the coil in a PMMC meter is mainly controlled by Spring tension.
  • Current creates a force that rotates the coil, but the springs pull back.
  • The coil stops when these forces balance, and the pointer shows the measurement.

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