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# class11.pdf - 22 Problem 33 Two long parallel wires carry...

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Problem Two long parallel wires carry currents of I 1 =3 A and I 2 =5 A and are separated by a distance d =20 cm as shown in the figure. Find the magnitude and direc.on of the B field at: a) a point midway b) at the point P shown in the figure 22. 33 Magne&c Force Between Two Parallel Conductors § The force on wire 1 is due to the current in wire 1 and the magne.c field produced by wire 2. § The force per unit length is: 22. 34 § Parallel conductors carrying currents in the same direc.on [email protected] each other. § Parallel conductors carrying currents in the opposite direc.ons repel each other.

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A. B. C. D. Quiz Two parallel wires A and B carry 0.3 A and -0.6 A currents (opposite direc.ons), respec.vely. § How does the force per unit length that A exerts on B compares (F AB ) to the one that B exerts on A (F BA )? 22. 35 ! F AB L = ! F BA L Current in wire B is reversed and current ﬂows in same direc.on in both wires. § How does the force per unit length that A exerts on B compares (F AB ) to the one that B exerts on A (F BA )?
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