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6% Problem 15:A rectangular loop with L,=0.15 m and L=0.15 m is sitting in a magnetic field B = 0.65 T as shown in the figure. There is a counterclockwise current I = 0.85 A in the loop
B
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8 % Part (a) Express the magnitude of the magnetic force on ab or cd, F,, in terms of the length L, current I and magnetic field B.
F=|
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p h L2 t
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8% Part (b) Calculate the numerical value of the magnitude of the force, F, on ab or cd in N. 8% Part (c) Express the magnitude of the magnetic force on bc or ad, F2, in terms of the length L2, current I and magnetic field B. 8% Part (d) Which direction does the force on ab act? 8% Part (e) Which direction does the force on cd act? 8 % Part (f) Express the torque of F on ab, with respect of the axis ef, in terms of F and L2. 8% Part (g) Express the torque of F1 on cd, with respect of the axis ef, in terms of F, and L2. 8% Part (h) What is the total torque on the current loop with respect of axis ef, in terms of F and L2? 8% Part (i) Calculate the numerical value of the total torque in N-m. 8% Part (j) Express the torque of F on ab, with respect of the axis cd, in terms of F and L2. 8% Part (k) Express the torque of F on cd, with respect of the axis cd, in terms of F and L2- 8% Part (l) What is the total torque on the current loop, with respect of the axis cd, in terms of F and L? 8% Part (m) True or false: the total torque on the loop is the same regardless of what is chosen as the position of the vertical axis of rotation.
