Questions
Find the magnitude of the magnetic induction B of a magnetic field generated by a system of thin conductors along which a current i is flowing at a point A (O, R, O), that is the centre of a circular conductor of radius R. The ring is in yz plane.
detailed solution
Correct option is B
B→A=μ0i4πRk^+μ0I2Ri^-μ0I4πRi^ BA=μ0I4πR(2π-1)2+(1)2=μ0I4πR22π2-2π+1Talk to our academic expert!
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Two horizontal parallel straight conductors, each 20 cm long, are arranged one vertically above the other and carry equal currents in opposite directions. The lower conductor is fixed while the other is free to move in guides remaining parallel to the lower. If the upper conductor weighs 1.0 g, what is the approximate current (in A) that will maintain the conductors at a distance 0.50 cm apart?
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