A copper wire 40 cm long carries a current of 60 a and
A copper wire 40 cm long carries a current of 6.0 A and weighs 0.35 N. A certain magnetic field is strong enough to balance the force of gravity on the wire. What is the strength of the magnetic field?
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a copper wire 40 cm long carries a current of 60 a and weighs 035 n a certain magnetic field is strong enough to
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