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 240×10−6N−m when the deflection is 100 divisions on full scale. If the flux density of the magnetic field in the airgap is 1.0Wb/m2, the resistance that must be put in series with the coil to give one volt per division is ________Ω. (Assume resistance of the voltmeter coil is negligible)

The coil of a moving coil voltmeter is 40 mm long and 30 mm wide and h

1.	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 240×10−6N−m when the deflection is 100 divisions on full scale. If the flux density of the magnetic field in the airgap is 1.0Wb/m2, the resistance that must be put in series with the coil to give one volt per division is ________Ω. (Assume resistance of the voltmeter coil is negligible)
Answer» 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 $240 \times 10^{- 6} N - m$ when the deflection is 100 divisions on full scale. If the flux density of the magnetic field in the airgap is $1.0 W b / m^{2}$ , the resistance that must be put in series with the coil to give one volt per division is ________ $Ω$ . (Assume resistance of the voltmeter coil is negligible)

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