7. The magnitude of magnetic field induction at the centre O in the figure shown is (Given: R1 = 10 cm, R2 = 20 cm and i = 1 A)
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The magnetic field created by a circular arc of radius R and angle θ carrying a current I is given by the formula B = μ0Iθ/4πR, where μ0 is the permeability of free space. In this case, we have two arcs: one with radius R1 = 10 cm and angle 180°, and another Show more…
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