A square loop of wire with a small resistance is moved with constant speed from a field free region into a region of uniform B field (B is constant in time) and then back into a field free region to the right. The self inductance of the loop is negligible. Сhoose true false When entering the field the coil experiences a magnetic force to the left. When leaving the field the coil experiences a magnetic force to the right. Upon entering the field, a counterclockwise current flows in the loop. Upon leaving the field, a counterclockwise current flows in the loop.

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Q: Suppose that a rectangular toroid has 2000 windings and a self-inductance of 0.040 H. If h = 0.10 m,…

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Q: (b)     FIGURE 4 shows a 0.8 m long metal bar being pulled to the right at a steady speed of 5.8…

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Q: -at The magnetic flux through the loop shown in the accompanying figure varies with time according…

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Q: A circular coil lies flat on a horizontal table. A magnet bar is held above the table. There will be…

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Q: Calculate the value for the change in magnetic field inside the solenoid, the changing flux in the…

A: Given , N=1000            Length=l=40cm=0.4m             radius=r=diameter/2=20/2=10cm=0.10m…

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Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.