A given neuron in the brain carries a current of 3.1 10-8 A. If the SQUID
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A given neuron in the brain carries a current of 3.1 × 10-8 A. If the SQUID detects a magnetic field of 2.8 × 10-14 T, how far away is the neuron? Treat the neuron as a straight wire.
A. 22 cm
B. 70 cm
C. 140 cm
D. 176 cm
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