A wire formed in the shape of a right triangle with base Lab-31 cm and height Lb

Question

A wire formed in the shape of a right triangle with base Lab-31 cm and height Lbc = 74 cm carries current I = 326 mA as shown in Position 1. The wire is located in a region containing a constant magnetic field B 0.7 T aligned with the positive z-axis Position1 Position2 1) What is Facx the x-component of the force on the segment of the wire that connects points a and c in Position 1? 0 Submit 2) What is Fac,y, the y-component of the force on the segment of the wire that connects points a and c in Position 1? Submit The wire is now rotated 180° about the y-axis to Position 2, as shown. What is AU12, the change in potential energy of the wire? Note that AU12 is a signed number. U12 is positive if the potential energy in Position 2 is higher than the potential energy in Position 1 4) The wire is now rotated back 90° about the y-axis towards position 1. If the wire is released from this position, how would it move? oIt would rotate towards Position 1 It would rotate towards Position 2 It would remain stationary Submit 5) The wire is now returned to Position 1 and then rotated 1800 about the x-axis to Position 3, as shown. What is U13, the change in potential energy of the wire? If the potential energy increases in going from Position 1 to Position 3, the change in potential energy is Ö positive Position 3 J Submit

Explanation / Answer

F = I(L*B)

Fac,x = -I*Lbc*B

Fac,x = 0.169 N

part b )

Fac,y = I*Lab*B

Fac,y = 0.07 N

part c )

U12 = U2 -U1 = - (mu2 - mu1) *B = 2muB = I*Lab * Lac * B

U12 = 0.052 J

part e )

same like the part c

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