Measurement and Instrumentation
In a ballistic galvanometer, the deflecting torque is proportional to

The current through coil
Square of current through coil
Square-root of current through coil
Sine of measured

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Measurement and Instrumentation
It can be stated that

CT operates with a higher flux density than PT
No generalisation can be made with regard to the flux densities in CT and PT
CT operates at almost the same flux density as a PT
CT operates with considerably lower flux density than a PT

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