17.As the circuit shown in Fig. 2, what is the ratio among the power of R₁, R₂, and R₃? (A) 6 : 3 : 2 (B) 5 : 2 : 3 (C) 25 : 2 : 3 (D) 5 : 1 : 1 (E) 25 : 4 : 9

1.In the figure shown on the right, a wire is extended from y = -(a+L) to y = a+L and is bent as a semicircle in the xy plane. If the wire carries a current I flowing along the direction indicated by the arrows and the magnetic flux density B in the region is along the +z direction, determine the magnetic force acting on the semicircular arc with the following parameters: I = 2 A, B = 5 T, a = 1 m, L = 2 m. (A) 10 Nt (B) 20 Nt (C) 30 Nt (D) 40 Nt (E) 5 Nt

17.As the circuit shown in Fig. 2, what is the ratio among the power of R₁, R₂, and R₃?

(A) 6 : 3 : 2
(B) 5 : 2 : 3
(C) 25 : 2 : 3
(D) 5 : 1 : 1
(E) 25 : 4 : 9

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