CODE-680922 - 2017 Fall, PHYS 212 (cook) Test8 fl7- Y01 pt Calculate the magnitu

Question

CODE-680922 - 2017 Fall, PHYS 212 (cook) Test8 fl7- Y01 pt Calculate the magnitude of the torque about the z-axis on the loop. in Nwm) 15. AO 7.96 x 10-3 BO 9.32× 10-3 CO 1.09x10-2 DO 1.28 x 10-2 EO 1.49 × 10-2 FO 1.75 x 10-2 GO 2.04× 10-2 HO 2.39 × 10-2 5 pt (829p49) A 400 turns solenoid having a length of 30 cm and a diameter of 11 cm carries a current of 0.35 A Calculate the magnitude of the magnetic field B inside the solenoid. (in T) 16. AO 1.06× 10-4 BO 1.41 × 10-4 CO 1.87 x 10-4 DO 2.49× 10-4 EO 3.32x 10-4 FO 4.41 x 10-4 GO 5.86× 10-4 HO 7.80× 10-4

Explanation / Answer

B = u0 n I and n = N / L

B = u0 (N / L ) I

B = (4pi x 10^-7) (400 / 0.30) (0.35)

B = 5.86 x 10^-4 T

Ans(G)

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