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- G. U Hn E. F) + A nail wapped W/wre and unnected to a batteny as below Iron nail + Bulley Whatis the dution ot the magnetic teld? E. B. C.G D. A. 1 HA G. UWe have two solenoids with equal magnetic field at the center. The length of solenoid 1 is L1, number of turns is N1 and the current through it is 11. Solenoid 2 of length L2 is seven times longer than solenoid 1, and the current through it, 12, is 4 times larger than 11. How does N2 compare to N1 for the magnetic field at the center of the solenoid to be equal? O N1 = 7/4 N2 O N1=N2 O N1 = 1/7 N2 N1 = 7 N2 N1= 4/7 N2The magnet field at point P is A. B. C. Into the screen. Out of the screen. Zero. I 2.0 cm a 1.0 cm P
- A 180 turn solenoid having a length of 24 cm and a diameter of 9.5 cm carries a current of 0.29 A. What is the magnitude u of its magnetic dipole moment? Number i Units eTextbook and MediaA solenoid is wound on a rod 4 cm in diameter in 50 cm long. The windings carry a current of 3.5 A in the sense that is shown. The current produces a magnetic field of magnitude 4.1 mT at the center of the solenoid. The number of turns in the solenoid is closest to which? A. 4700 B. 3700 C. 470 D. 1900 E. 19I2 3 2 1 2 3 A Consider two infinitely long currents I =1 A (traveling in the +x direction) and I2 = 2 A (traveling in the +y direction) as shown. Each major division is 1 cm.
- A cylindrical solenoid that is 40-cm long generates a uniform magnetic field of strength 1.4 T inside the solenoid when the current is 7.0 A. How many turns of a single coil are present in this solenoid? a. 40,000 turns b. 64,000 turns c. 56,000 turns d. 48,000 turns e. 32,000 turns13. You have the apparatus shown in Figure P21.13. A circular metal plate swings past the north pole of a permanent magnet. The metal consists of a series of rings of in- creasing radius. Indicate the direction of the current in one ring (a) as the metal swings down from the left into the magnet- ic field and (b) as the metal swings up to- ward the right out of the magnetic field. Use Lenz's law to justify your answers. Figure P21.13 Metal plate Magnet N