| Feladat: | 5205. fizika feladat | Korcsoport: 16-17 | Nehézségi fok: átlagos |
| Füzet: | 2020/február, 128. oldal |  PDF | MathML |
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| Témakör(ök): | Feladat, Mozgási indukció | ||
| Hivatkozás(ok): | Feladatok: 2020/február: 5205. fizika feladat | ||
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A szöveg csak Firefox böngészőben jelenik meg helyesen. Használja a fenti PDF file-ra mutató link-et a letöltésre. The figure shows a loop made of a piece of copper wire. The shape of the loop is two concentric semi-circles and two connecting straight line segments. The loop is on a horizontal tabletop, but initially the smaller semi-circle is in a vertical position. The small semi-circle is turned into the horizontal position in 1 s. The dashed line is the axis of rotation. The whole loop is in uniform vertically upward magnetic field.  In which case is the flux linkage of the loop greater? What is the average value, and the direction of the induced current in the loop, while the smaller loop turns? What is the direction of the current? What is the greatest value of the induced current if the small semicircle is rotated at a constant angular speed and it takes exactly s to turn from the vertical position to the horizontal position? Data: the magnetic induction is , the resistance of the loop is , the radius of the smaller semi-circle is m. |