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In which of the following instruments the torque is proportional to the first derivative of inductance with respect to the angle?
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- Moving coil instrument
- Electrodynamometer instrument
- Moving iron instrument
- Ferro dynamic instruments
- Moving coil instrument
Correct Option: C
In moving iron instrument the torque is proportional to the first derivative of inductance with respect to the angle i.e.
| τ ∝ | |
| dt |
