Figure I shows two current segments. The lower segment carries a current of i = 0.40 A and includes a semicircular arc with radius 5.0 cm, angle 180°, and center point P. The upper segment carries current i, = 2i1 and includes a circular arc with radius 4.0 cm, angle 120°, and the same center point P. Figure 1

Principles of Physics: A Calculus-Based Text
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Chapter24: Electromagnetic Waves
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Figure I shows two current segments. The lower segment carries a current of i1 = 0.40 A
and includes a semicircular arc with radius 5.0 cm, angle 180°, and center point P. The upper segment
carries current i, = 2i1 and includes a circular arc with radius 4.0 cm, angle 120°, and the same center
point P.
Figure 1
(a) What are the magnitude and direction of the net magnetic field B at P for the indicated current
directions?
(b) What are the magnitude and direction of B at P if ij is reversed?
Transcribed Image Text:Figure I shows two current segments. The lower segment carries a current of i1 = 0.40 A and includes a semicircular arc with radius 5.0 cm, angle 180°, and center point P. The upper segment carries current i, = 2i1 and includes a circular arc with radius 4.0 cm, angle 120°, and the same center point P. Figure 1 (a) What are the magnitude and direction of the net magnetic field B at P for the indicated current directions? (b) What are the magnitude and direction of B at P if ij is reversed?
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