What is the magnitude of the equatorial and axial fields due to a bar magnet of length 5 cm at a distance of 50 cm from its mid-point? The magnetic moment of the bar magnet is 0.40 Am?.
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- A square coil and a rectangular coil are each made from the same length of wire. Each contains a single turn. The long sides of the rectangle are twice as long as the short sides. Find the ratio T-square / T-rectangle of the maximum torques that these coils experience in the same magnetic field when they contain the same current.Doubly-ionized particles with an atomic mass of 59.4 u are moving due N at a speed of 7.78 x 105 m/s when they enter a uniform magnetic field of strength, B = 35.5 mT. The ions, which are moving perpendicular to the field, follow a circular path of radius, r, and travel north a distance, h = 2.02 m, before leaving the field at an angle, 8, as shown in the figure. (a) What is the radius of the ions' circular path? r = 6.793 m (b) At what angle do the ions leave the field? 0 = 73.44 x h 0 2Fifty wire loops of radius 0.6m are bound together in a region where there is a 3.5T magnetic field which passes through there centers. At t-0 sécands, these loops are rotated with an angle given by the equation below O(t)=25+² - 20t+4 what will be the total electromotive force of the wire loops at t=25 seconds ?
- A rigid rectangular current loop abcd is in a uniform magnetic field. The magnetic field is 1.5T and in the y direction. The current is 2.0A and in the directions of blue arrows. The length of ab is 0.5 m and the length of ad is 0,8 m. For the coordinate, the r- and y-axis are along the horizontal and vertical direction on the paper, respectively, and the z-axis points out of the paper. (a) What are the magnitude and direction of the magnetic force on cach side of the loop? V B = 1.5T d I-2A .----------H Fah = direction = Fae = direction = Fad= direction = 0.5 m Fie = direction = (b) Based on your calculation of the magnetic forces, which of the following statements are true regarding the motion of the loop due to the magnetic forces? Explain your reasoning with one or two sentences. Use this rotation diagrams to identify a clockwise or counterclockwise rotation around horizontal (dashed line H) or vertical (dashed line V) axis. The rotation direction is viewedA rectangular coil of wire consisting of 10 turns, each 0.20 m long and 0.30 m wide, lies in the xy plane. If the coil carries a current of 2.0 A, what is the torque exerted by a magnetic field of magnitude 0.010 T that is directed at an angle of 30.0 degrees with respect to the positive z axis? a) 1.2 x 10^-2 N.m b) 2.4 x 10^-2 N.m c) 6.0 x 10^-3 N.m d) 4.0 x 10^-3 N.m e) 3.0 x 10^-3 N.mA oxygen ion with a -2 charge is traveling in the +z direction. It enters a region of uniform magnetic field that points to the -y direction. When the ion enters this region, which direction will it be deflected?