Problem 2 (25 points) - Solutions The long, straight wire AB shown in the figure carries a current of I1 = 14.0 A. The rectangular loop whose long edges are parallel to the wire carries a current of I2 = 5.00 A. (a) (15 pts) Find the magnitude and direction of the net force exerted on the loop by the magnetic field created by the wire. Ratio of magnetic fields at these points will be (a) 8 (b) 1/ 2 2 (c) 3 (d) 4 31. A magnet of magnetic moment 2 J T −1 is aligned in the direction of magnetic field of 0.1 T. What is the net work done to bring the ma gnet normal to the magnetic field (a) 0.1 J (b) 0.2 J (c) 1 J (d) 2 J 32. The magnetic moment of a magnet of length 10 cm and ... (a) Determine the magnitude of the net magnetic field midway between the wires. (b) Determine the net magnetic field at a point 1.0 $\mathrm{m}$ to the side of one wire and 3.0 $\mathrm{m}$ from the other wire. If the direction of the electric current is reversed, the magnetic field reverses also and circles the wire in a clockwise direction. If you wrap some of the wire around the nail in one direction and some of the wire in the other direction, the magnetic fields from the different sections fight each other and cancel out, reducing the strength of ... Placing the magnet in a changing magnetic field. Magnetic fields. The area around a magnetic where it has a magnetic effect is called the . magnetic field. The lines which show the direction of the magnetic field are called . lines of flux. The lines are always coming out of the North pole and go back in through the South pole. 33. (II) Two long thin parallel wires 13.0 cm apart carry 25-A currents in the same direction. Determine the magnetic field at point P, 12.0 cm from one wire and 5.0 cm from the other (Fig. 20–55). Solution. The field from each wire makes concentric circles about the source wire. Two long parallel wires lie in the xz plarœ One wire passes through the point (—2 m, 0, 0) and the other through the point (+2 m, 0, 0) The wires carry equal currents in the posltlve z directlorL The magnetic field at (—3 In 0, 0) is in the negative y directiorL The magnetic field at (—1 In 0, 0) is in the posltlve y directiorL

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Oct 03, 2015 · Magnetic field is a region around a magnetic material or a moving electric charge within which force of magnetism acts. Magnetic field strength is the force experienced by an object when it's placed in the magnetic field. It's measured in Tesla, Gamma, Gauss. Use this information to determine the electric field of charge put on a 5.0-cm aluminum spherical ball at the following two points in space: (a) a point 1.0 cm from the center of the ball (an inside point) and (b) a point 10 cm from the center of the ball (an outside point). Magnetic Field Strength: If a particle travels in a magnetic field, then the magnitude of the effect of the magnetic field on the moving particle is called the magnetic field strength.

A current carrying wire generates a magnetic field. According to Biot-Savart’s law, the magnetic field at a point due to an element of a conductor carrying current is, Directly proportional to the strength of the current, i; Directly proportional to the length of the element, dl Dec 21, 2011 · The signal in MRI results from the magnetic dipole moments of hydrogen nuclei. A strong magnetic field is needed to align hydrogen nuclear magnetic dipole moments preferentially along the magnetic field, the longitudinal direction. The larmor frequency is determined by the magnetic field strength and the nucleus of interest. simply a3 times the strength of the magnetic ﬁeld at the center of the sphere due to external sources. Thus, we write, p1 = a3B1, and p2 = a3B2, (13) where B1 is the magnetic ﬁeld at the center of ball 1 due to the permanent magnet plus ball 2, etc. 2.2.1 The Initial Conﬁguration

Nov 24, 2015 · Temporary magnets can be also magnetized by placing them inside an external magnetic field. The material’s magnetism lasts so long as the external magnetic field is switched on, and disappears when the external magnetic field disappears. Temporary magnetic materials include both paramagnets and soft ferromagnets. Part A Review What is the strength of the magnetic field at point P in the figure?(Figure 1) Assume that I-46 A, 1 1.4 cm, and r Express your answer to two significant figures and include the appropriate units View Available Hint(s) -28 cm You may want to review (Page 796) For help with math skills, you may want to review: The Vector Cross ...