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Q: What is the value of R3? R = 15.0 Q, R, = 15.0 Q, AV = 5.50 V and / = 114 mA. %3! O 40.7 Q O 7.50 Q ...
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A long, straight wire with a circular cross section of radius R carries a current I. Assume that the current density is not constant across the cross section of the wire, but rather varies as J=αr, where αα is a constant.
Q1. What is the direction of the magnetic field in the two regions given (r < R and r >R) using the Amperian equation.
Image A. What is the direction of the magnetic field at a point P a distance a away from the bend.
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