1. The drawing shows a wire composed of three segments, AB, BC, and CD. There is
ID: 2145000 • Letter: 1
Question
1. The drawing shows a wire composed of three segments, AB, BC, and CD. There is a current of I = 2.8 A in the wire. There is also a magnetic field B(magnitude = 0.19 T) that is the same everywhere and points in the direction of +z axis. The lengths of the wire segments are LAB = 1.4 m, LBC = 0.7 m, and LCD = 0.7 m. Find the magnitude of the force that acts on each segment.
2. The triangular loop of wire shown in the drawing carries a current of I = 4.34 A. A uniform magnetic field is directed parallel to side AB of the triangle and has a magnitude of 1.62 T. (a) Find the magnitude of the magnetic force exerted on each side of the triangle. (b) Determine the magnitude of the net
force exerted on the triangle.
FAB = JCKANT FBC = KCANTJ FCD = TCNJKA The drawing shows a wire composed of three segments, AB, BC, and CD. There is a current of I = 2.8 A in the wire. There is also a magnetic field B(magnitude = 0.19 T) that is the same everywhere and points in the direction of +z axis. The lengths of the wire segments are LAB = 1.4 m, LBC = 0.7 m, and LCD = 0.7 m. Find the magnitude of the force that acts on each segment. The triangular loop of wire shown in the drawing carries a current of I = 4.34 A. A uniform magnetic field is directed parallel to side AB of the triangle and has a magnitude of 1.62 T. Find the magnitude of the magnetic force exerted on each side of the triangle. Determine the magnitude of the netExplanation / Answer
1) a) FAB = B i l(AB) sin theta
= 0.19 * 2.8 * 1.4 * sin 90
F[AB] = 0.745 N
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b)F[BC] = B i l(BC) sin theta
= 0.19 * 2.8 * 0.7 * sin 90
F[BC] = 0.372 N
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c)F[CD] = B i l(CD) sin theta
= 0.19 * 2.8 * 0.7 * sin 0
F[CD] = 0 N
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