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Find the magnetic field 6.26 cm from a long, straight wire that carries a current of...

Find the magnetic field 6.26 cm from a long, straight wire that carries a current of 5.80 A .

and

Two long, straight wires are separated by a distance of 12.1 cm and carry parallel currents. One wire carries a current of 2.23 A ; the other carries a current of 4.33 A.What is the magnitude of the total magnetic field midway between the two wires?Btotal =

and same question Two long, straight wires are separated by a distance of 12.5 cm and carry parallel currents. One wire carries a current of 2.25 A ; the other carries a current of 4.33 A.What is the magnitude of the total magnetic field midway between the two wires?

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