Electrical and Electronics Measurements Indicating Instruments PMMC Instrument

If a PMMC instrument has a coil of 100 turns, flux density of 0.15 Wb/m2, area of 80 mm2 and current of 5 mA, then what will be its deflecting torque?

1
7 × 10-7 Nm
2
0.7 × 10-7 Nm
3
6 × 10-6 Nm
4
0.2 × 10-5 Nm

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