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Unformatted text preview: #E2 HW5 −7 F 2k I 1 I 2 2 × (1 × 10 N / A ) × 4 A × 4 A = = = 3.2 × 10 − 5 N / m l r 0.1m ' 2 #E3 Magnetic force is inversely proportional to the distance r between the two wires. Distance is tripled ‐> Force is one‐third. #E5 q = I ⋅ t = 4 A × 5s = 20C #E6 F = qvB = 0.06C × 600m / s × 0.5T = 18 N #E8 F = IlB F 6N B= = = 4T I ⋅ l 5 A ⋅ 0.3m #E10 Φ = A ⋅ B = 0.03m 2 ⋅ 0.4T = 0.012m 2 ⋅ T If the field lines are parallel to the plane, there is no flux. v #SP2 (a) F = qvB = 0.05C × 200m / s ×...
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This note was uploaded on 10/20/2011 for the course PHY 309L taught by Professor Sai during the Spring '08 term at University of Texas at Austin.

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