9[E]) You set up a uniform magnetic field of strength 0.3 T that points north. Y

Question

9[E]) You set up a uniform magnetic field of strength 0.3 T that points north. You then take a wire, place it on the lab table, and run a 3 A current along it toward the east. What is the magnitude of the force per unit length along the wire? [Enter the eastward component of the force in the first answer box, the northward component in the second box, and the upward component in the third box. If the force components point west, south, or down, use negative values.]

10[M]) You tightly coil the wire up into a circle of radius 11 cm with 300 turns. You switch the current back on with the same value as before and place the coiled wire on the lab table so that the current flows counterclockwise when you look at the coil from above. What is the magnitude of the magnetic force per unit length on a very small segment of the coil that is directly to the east of the center of the coil?

11[M]) What is the magnitude of the magnetic force per unit length on a very small segment of the coil that is directly north of the coil's center?

12[M]) What is the magnitude of the total torque exerted by magnetic forces on the coil?

Can someone please help me with 9, 10, 11, and 12??

Explanation / Answer

force per unit length = magnetic field * current

force per unit length = 0.3 * 3

force per unit length = 0.9 N/m

direction of force will be upward

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