A flat circular coil with 40 loops of wire has a diameter of 32 cm. What current
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A flat circular coil with 40 loops of wire has a diameter of 32 cm. What current must flow in its wires to produce a field in air of 3.0 × 10-4 Wb/m2 at its center?
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From Fig 311b B Ho NI 2r or 3...View the full answer
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