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Sources of Magnetic Fields: Law of Biot -Savart R 1. Determine the magnitude and direction of the magnetic field in the cente
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Answer #1

Net magnetic field = B due to quarter + B due to horizontal wire + B due to vertical wire + B due to semicircle

= 0.25*u0i/(2*2R) + u0i/(4pi*2R) *sin 45 degree + u0i/(4pi*2R) *sin 45 degree - 0.5*u0i/(2*R)

= u0i/R *[1/16 +0.707/(8pi) +0.707/(8pi) - 1/4]

= -0.13123 u0i/R into the page

= 0.13123 u0i/R out of the page

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