6. A horizontal wire carries a current straight toward you. From your point of v

Question

6. A horizontal wire carries a current straight toward you. From your point of view, the magnetic field at a point directly below the wire points 7. A bar magnet is held vertically with its upper end a little-bit below te center of a horizontal metal ring. The upper end of the magnet is its north pole, as shown in the figure. The bar magnet is now dropped. An observer views the ring from above its center. To this observer, how will the induced current in the ring behave as the magnet falls? a) the current will flow clockwise and be decreasing b) The current will flow counterclockwise and be increasing. e) The current will flow counterclockwise and be decreasing. d) The current will flow clockwise and be increasing 8. An incredible amount of electrical energy passes down the tunnel of a large tornado every second. Measurements taken in Oklahoma at a distance of 9.00 km from a large tornado showed an almost constant magnetic field of 1.50x10^-8 T associated with the tornado. What was the average current going down the funnel? (Mu=4Pi x10^-7 T.m/A)

Explanation / Answer

6. to the right

7 clockwise

8. B = u0 i/2r

i = 2Br/u0 = 3*10^-8/4 pie *10^-7 = 0.023885 amp

Related Questions

Navigate

• Browse (All)
• Browse 6
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.