A galvanometer coil has 500 turns and each turn has an average area of . If a torque of 1.5Nm is required to keep this coil parallel to a magnetic field when a current of 0.5A is flowing through it, the strength of the field (in T) is ____
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A rectangular coil of area 2.5cm x 1.5cm has 100 turns. When a current of 2mA is passed through it, the deflection is . The couple per unit twist of the suspended wire is the magnetic induction is nearly……………..T.
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