Expanding Metal Ring Points:10 A circular metal ring, as shown on the diagram below, is constructed so as to expand or c

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Expanding Metal Ring Points 10 A Circular Metal Ring As Shown On The Diagram Below Is Constructed So As To Expand Or C 1 (34.4 KiB) Viewed 24 times

Expanding Metal Ring Points:10 A circular metal ring, as shown on the diagram below, is constructed so as to expand or contract freely. In a region with a constant magnetic field B, oriented perpendicular to it, the ring expands, with its radius growing with time as r=ro(1+at+). As the ring expands and grows thinner, its resistance per unit length changes according to R=R. (1+BE). Find the current induced in the ring as a function of time. To check your answer, suppose that B. = 3.05 mt, r. = 17.0 cm, R = 5.65 [ S/(m)], a = 0.260 x 10-45-2, and B = 0.435 x 10-25-2. What is the value of the induced current att = 30.5 s? (Note: Give the direction of the current where when viewed from above a positive current will move counterclockwise.) Above Ring Во Praltar) Below Ring - Indicates expansion