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Figure shows two circular rings of radii math xmlns=http://www.w3.org/1998/Math/MathMLmia/mimo /momo&/momo /momib/mimo /momo(/momia/mimo>/momib/mimo)/mo/math joined together by wire of negligible resistance. If the arrangement is placed in a time varying magnetic field, \( \frac{d B}{d t}=k \) and if the resistance per unit length of wire is \( \lambda \), then induced current is
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