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An advantage of a permanent magnet moving coil instrument is that it is:
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- free from friction error
- has high (torque/weight of the moving parts) ratio
- has low (torque/weight of moving parts) ratio
- can be used on both a.c. and d.c.
- free from friction error
Correct Option: B
The advantage of a permanent magnet moving coil instrument is that it posses high (Torque/weight) ratio.