Measurement and Instrumentation
Resolution of an instrument is

 ability to distinguish polarity.
 the minimum quantity it can measure.
 the maximum non linearity.
 the maximum quantity it can measure.

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Measurement and Instrumentation
A Manganin swap resistance is connected in series with a moving coil ammeter consisting of a milli ammeter and a suitable shunt in order to

 Obtaine large deflecting torque.
 Reduce the size of the meter.
 Minimize the effect of stray magnetic fields.
  Minimize the effect of temperature variation.

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