Question

ad3cOee7-00b1-42f7-b1fa-5ffebbcc1d74.JPG A loop of diameter d = 12 cm, carrying a current 1 = 0.4 A is placed inside a magnetic field B (0.2 T) ? + (0.4 T) j·The normal to the loop is parallel to the unit vector n-0.6i-0.8j. What is the potential energy of the loop? 2. 3. A hollow cylinder of inner radius a 5 cm and outer radius b 7 cm. A uniform current density j 1 A/cm flows through the cylinder. Calculate the magnitude of magnetic field at a distance d 10 cm from the axis of the cylinder A horizontal, long current-carrying wire is hanging from a vertical thread. The current is oriented into the plane of Fig. 1 shown below. A uniform magnetic field B-0.4 T is applied along the negative y-axis and the wire is pulled and angle 9 away from the vertical by a magnetic force. The wire has a length L 80 em, a 4. e.. e., .rrant ': n 3 tunat is the Value of the angle e? i
2,3

Answer 1

ว่า Il 6ll Ilml 0447x 1 .4472 0-13- 03304412 o.4472 magmutic momimt of the loop i moment 1另samlas duuuctiom of moumal of thr loop.

oop 1 4 10' A/m" 丁 = 3) atea 2 2 10cm oop

4 104x 3.14-к(49-35)メ10-4 T> d= 10 cm = 10x10-2 m. 2 4x3.14 xIO 5.36 ak 3-1(x 10ス10-2