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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > There is a conducting ring of radius R. Another ring having current i and radius r(r<<R) is kept on the axis of bigger ring such that its center lies on the axis of bigger ring at a distance x from the center of bigger ring and its plane is perpendicular to that axis. The mutual inductance of the bigger ring due to the smaller ring is

There is a conducting ring of radius R. Another ring having current i and radius r(r<<R) is kept on the axis of bigger ring such that its center lies on the axis of bigger ring at a distance x from the center of bigger ring and its plane is perpendicular to that axis. The mutual inductance of the bigger ring due to the smaller ring is

The current passing through the battery immediately after key K is closed [it is given that initially all the capacitors are uncharged (given that R = 6 Ω and C = 4 μF)] is: