A moving coil galvanometer has a coil with 175 turns and area 1 cm2. It uses a torsion band of torsion constant 10 N-m/rad. The coil is placed in a magnetic field B parallel to its plane. The coil deflects by 1° for a current of 1 mA. The value of B (in Tesla) is approximately:

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Chapter1: Units, Trigonometry. And Vectors
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A moving coil galvanometer has a coil with
175 turns and area 1 cm². It uses a torsion
band of torsion constant 106 N-m/rad. The
coil is placed in a magnetic field B parallel to
its plane. The coil deflects by 1° for a current
of 1 mA. The value of B (in Tesla) is
approximately:
1. 104
2. 10-2
3. 101
4. 10-3
Transcribed Image Text:A moving coil galvanometer has a coil with 175 turns and area 1 cm². It uses a torsion band of torsion constant 106 N-m/rad. The coil is placed in a magnetic field B parallel to its plane. The coil deflects by 1° for a current of 1 mA. The value of B (in Tesla) is approximately: 1. 104 2. 10-2 3. 101 4. 10-3
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