Compared to how an electric dipole will rotate to point in the (opposite / same) direction of an external electric field, a closed current carrying loop will rotate to orient itself such that magnetic moment will (aligned / antialigned) itself with an external magnetic field.
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Select the options that make the following statement True.
Compared to how an electric dipole will rotate to point in the (opposite / same) direction of an external electric
field, a closed current carrying loop will rotate to orient itself such that magnetic moment will (aligned / antialigned) itself with an external magnetic field.
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- (Figure 1) shows a mass spectrometer, an analytical instrument used to identify the various molecules in a sample by measuring their charge-to- mass ratio q/m. The sample is ionized, the positive ions are accelerated (starting from rest) through a potential difference AV, and they then enter a region of uniform magnetic field. The field bends the ions into circular trajectories, but after just half a circle they either strike the wall or pass through a small opening to a detector. As the accelerating voltage is slowly increased, different ions reach the detector and are measured. Consider a mass spectrometer with a 200.00 mT magnetic field and an 8.0000 cm spacing between the entrance and exit holes. igure + AV d Detector Part A To five significant figures, what accelerating potential difference AV is required to detect the ion O,? The masses of the atoms are shown in the table; the mass of the missing electron is less than 0.001 u and is not relevant at this level of precision. Use…49.An electron with a kinetic energy of 1.04 x 104 eV is initially moving south in a uniform magnetic field of magnitude 488 G, directed east. Describe in detail the electron's trajectory, including its shape and orientation. the radius of the path direction of initial force shape of trajectory
- As shown a charged particle traveling in a nonuniform magnetic field forming a magnetic bottle. (a) Explain why the positively charged particle in the figure must be moving clockwise when viewed from the right of the figure. The particle travels along a helix whose radius decreases and whose pitch decreases as the particle moves into a stronger magnetic field. If the particle is moving to the right along the x axis, its velocity in this direction will be reduced to zero and it will be reflected from the right-hand side of the bottle, acting as a “magnetic mirror.” The particle ends up bouncing back and forth between the ends of the bottle. (b) Explain qualitatively why the axial velocity is reduced to zero as the particle moves into the region of strong magnetic field at the end of the bottle. (c) Explain why the tangential velocity increases as the particle approaches the end of the bottle. (d) Explain why the orbiting particle has a magnetic dipole moment.6. In the velocity selector, what should be the direction of a magnetic field so that the particle will travel upwards (in the +y direction) undeflected?A particle of charge -2.5 x 10ˉ8 C is moving with an instantaneous velocity of magnitude v = 4 x 10^4 m/s in the X - Y coodinate plane at an angle of 50° anticlockwise from the positive x-axis A) What is the magnitude and direction of the force exerted on this particle by a magnetic field with magnitude 2T in the x-direction? B) Repeat part a) but for the z-direction
- 53. A wire is formed into a circle having a diameter of w 10.0 cm and is placed in a uniform magnetic field of 3.00 mT. The wire carries a current of 5.00 A. Find (a) the maximum torque on the wire and (b) the of potential energies of the wire-field system for differ- range ent orientations of the circle.Two long, parallel wires separated by 50 cm each carry currents of 4.0 A in a horizontal direction. a) Find the magnetic field midway between the wires if the currents are in the same direction. b) Find the magnetic field midway between the wires if the currents are in opposite directions.An electron is accelerated through 2500 V from rest and then enters a region where there is a uniform 1.60 T magnetic field. What are the maximum and minimum magnitudes of the magnetic force acting on this electron?