Solving a problem in physics section 63 point 65 electr

Solving a problem in physics section 63 point 65 electr

65. In the magnetic material of the rod length l = 50 cm in one layer wound wire so that per centimeter length of the rod 20 turns necessary. Determine the energy W of the magnetic field inside the solenoid, if the current I in the coil is 0.5 A. The area of S-section of the rod is equal to 2 cm 2.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)