The coil 2
The coil of a moving coil voltmeter is 40 mm long and 30 mm wide and has 100 turns on it. The control spring exerts a torque of 240 x 10-6 N-m when the deflection is 100 divisions on full scale. If the flux density of the magnetic field in the air gap is 1.0 Wb/m2 . How can we modify the coil arrangement so that the coil to give one volt per division. The resistance of the voltmeter coil may be neglected.
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