A long, straight, vertical segment of wire traverses a magnetic field of magnitu

Question

A long, straight, vertical segment of wire traverses a magnetic field of magnitude 2.0 T in the direction shown in the diagram. The length of the wire that lies in the magnetic field is 0.060 m. When the switch is closed, a current of 4.0 A flows through the wire from point P to point Q. Which one of the following statements concerning the effect of the magnetic force on the wire is true? A) The wire will be pushed to the left. B) The wire will be pushed to the right. C) The wire will have no net force acting on it. D) The wire will be pushed downward, into the plane of the paper. E) The wire will be pushed upward, out of the plane of the paper. What is the magnitude of the magnetic force acting on the wire? A) 0.12 N B) 0.24 N C) 0.48 N D) 67 N E) zero newtons A solenoid of length 0.250 m and radius 0.0250 m is comprised of 440 turns of wire. Determine the magnitude of the magnetic field at the center of the solenoid when it carries a current of 12.0 A. A) 2.21 times 10^-3 T B) 4.52 times 10^-3 T C) 9.05 times 10^-3 T D) 7.50 times 10^-3 T E) zero tesla

Explanation / Answer

4) the wire will be pushed downward, into the plane of the paper

5) F = Bil

= 2*4*0.06

= 0.48N

  

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